diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5eadf1e94..2816e00f4 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -281,7 +281,7 @@ jobs:
       # LINT BACKEND ###########################################################
       ##########################################################################
       - name: backend | Lint
-        run: cd backend && yarn && yarn run lint
+        run: cd database && yarn && cd ../backend && yarn && yarn run lint
 
   ##############################################################################
   # JOB: LOCALES BACKEND #######################################################
@@ -550,7 +550,7 @@ jobs:
         run: |
           cd e2e-tests/
           yarn
-          yarn run cypress run --spec cypress/e2e/User.Authentication.feature,cypress/e2e/User.Authentication.ResetPassword.feature,cypress/e2e/User.Registration.feature
+          yarn run cypress run
       - name: End-to-end tests | if tests failed, upload screenshots
         if: ${{ failure() && steps.e2e-tests.conclusion == 'failure' }}
         uses: actions/upload-artifact@v3
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce3bd4a10..8dc91f2fa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,8 +4,28 @@ All notable changes to this project will be documented in this file. Dates are d
 
 Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 
+#### [1.19.1](https://github.com/gradido/gradido/compare/1.19.0...1.19.1)
+
+- fix(frontend): admin question clickable [`#2810`](https://github.com/gradido/gradido/pull/2810)
+- refactor(frontend): change b-img to b-icon send [`#2809`](https://github.com/gradido/gradido/pull/2809)
+- fix(admin): update openCreation in case of tab open. [`#2806`](https://github.com/gradido/gradido/pull/2806)
+- fix(admin): english language for contributions in admin [`#2804`](https://github.com/gradido/gradido/pull/2804)
+- refactor(admin): event buttons for myself turned off in open contributions [`#2760`](https://github.com/gradido/gradido/pull/2760)
+- fix(admin): contribution page [`#2794`](https://github.com/gradido/gradido/pull/2794)
+- fix(frontend): info.svg [`#2798`](https://github.com/gradido/gradido/pull/2798)
+- fix(backend): add relation messages to database query [`#2795`](https://github.com/gradido/gradido/pull/2795)
+- fix(admin): header and menu [`#2793`](https://github.com/gradido/gradido/pull/2793)
+- fix(frontend): send gdd - change first submit button text to 'Check Now' [`#2774`](https://github.com/gradido/gradido/pull/2774)
+- refactor(frontend): creations generated by link NL [`#2771`](https://github.com/gradido/gradido/pull/2771)
+- refactor(frontend): creations generated by link (FR) + (NL) [`#2770`](https://github.com/gradido/gradido/pull/2770)
+- refactor(frontend): update German locales [`#2765`](https://github.com/gradido/gradido/pull/2765)
+- refactor(backend): use find contributions helper for list contributions [`#2762`](https://github.com/gradido/gradido/pull/2762)
+
 #### [1.19.0](https://github.com/gradido/gradido/compare/1.18.2...1.19.0)
 
+> 7 March 2023
+
+- chore(release): version 1.19.0 [`#2786`](https://github.com/gradido/gradido/pull/2786)
 - fix(frontend): change contribution design [`#2731`](https://github.com/gradido/gradido/pull/2731)
 - refactor(frontend): commnity navbar- & unauthenticated b-gradido styles [`#2732`](https://github.com/gradido/gradido/pull/2732)
 - fix(database): change downwards migration to delete entries with last_announced_at IS NULL [`#2767`](https://github.com/gradido/gradido/pull/2767)
diff --git a/admin/package.json b/admin/package.json
index 2b9f3032f..10399739d 100644
--- a/admin/package.json
+++ b/admin/package.json
@@ -3,7 +3,7 @@
   "description": "Administraion Interface for Gradido",
   "main": "index.js",
   "author": "Moriz Wahl",
-  "version": "1.19.0",
+  "version": "1.19.1",
   "license": "Apache-2.0",
   "private": false,
   "scripts": {
diff --git a/admin/src/graphql/adminCreateContributionMessage.js b/admin/src/graphql/adminCreateContributionMessage.js
index 25d81f151..747e6d7d4 100644
--- a/admin/src/graphql/adminCreateContributionMessage.js
+++ b/admin/src/graphql/adminCreateContributionMessage.js
@@ -1,7 +1,7 @@
 import gql from 'graphql-tag'
 
 export const adminCreateContributionMessage = gql`
-  mutation ($contributionId: Float!, $message: String!) {
+  mutation ($contributionId: Int!, $message: String!) {
     adminCreateContributionMessage(contributionId: $contributionId, message: $message) {
       id
       message
diff --git a/admin/src/graphql/listContributionMessages.js b/admin/src/graphql/listContributionMessages.js
index c3ffdb0b9..a311598e2 100644
--- a/admin/src/graphql/listContributionMessages.js
+++ b/admin/src/graphql/listContributionMessages.js
@@ -1,7 +1,7 @@
 import gql from 'graphql-tag'
 
 export const listContributionMessages = gql`
-  query ($contributionId: Float!, $pageSize: Int = 25, $currentPage: Int = 1, $order: Order = ASC) {
+  query ($contributionId: Int!, $pageSize: Int = 25, $currentPage: Int = 1, $order: Order = ASC) {
     listContributionMessages(
       contributionId: $contributionId
       pageSize: $pageSize
diff --git a/admin/src/pages/CreationConfirm.vue b/admin/src/pages/CreationConfirm.vue
index 3f0b2d87f..55caf8677 100644
--- a/admin/src/pages/CreationConfirm.vue
+++ b/admin/src/pages/CreationConfirm.vue
@@ -410,6 +410,9 @@ export default {
       update({ adminListAllContributions }) {
         this.rows = adminListAllContributions.contributionCount
         this.items = adminListAllContributions.contributionList
+        if (this.statusFilter === FILTER_TAB_MAP[0]) {
+          this.$store.commit('setOpenCreations', adminListAllContributions.contributionCount)
+        }
       },
       error({ message }) {
         this.toastError(message)
diff --git a/backend/.env.test_e2e b/backend/.env.test_e2e
index a5cdc4bfd..99d6c14d5 100644
--- a/backend/.env.test_e2e
+++ b/backend/.env.test_e2e
@@ -1,5 +1,5 @@
 # Server
-JWT_EXPIRES_IN=1m
+JWT_EXPIRES_IN=2m
 
 # Email
 EMAIL=true
diff --git a/backend/.eslintrc.js b/backend/.eslintrc.js
index f213be8c6..096e4d60a 100644
--- a/backend/.eslintrc.js
+++ b/backend/.eslintrc.js
@@ -2,16 +2,10 @@ module.exports = {
   root: true,
   env: {
     node: true,
-    // jest: true,
   },
   parser: '@typescript-eslint/parser',
-  plugins: ['prettier', '@typescript-eslint' /*, 'jest' */],
-  extends: [
-    'standard',
-    'eslint:recommended',
-    'plugin:prettier/recommended',
-    'plugin:@typescript-eslint/recommended',
-  ],
+  plugins: ['prettier', '@typescript-eslint', 'type-graphql'],
+  extends: ['standard', 'eslint:recommended', 'plugin:prettier/recommended'],
   // add your custom rules here
   rules: {
     'no-console': ['error'],
@@ -23,4 +17,28 @@ module.exports = {
       },
     ],
   },
+  overrides: [
+    // only for ts files
+    {
+      files: ['*.ts'],
+      extends: [
+        'plugin:@typescript-eslint/recommended',
+        'plugin:@typescript-eslint/recommended-requiring-type-checking',
+        'plugin:type-graphql/recommended',
+      ],
+      rules: {
+        // allow explicitly defined dangling promises
+        '@typescript-eslint/no-floating-promises': ['error', { ignoreVoid: true }],
+        'no-void': ['error', { allowAsStatement: true }],
+        // ignore prefer-regexp-exec rule to allow string.match(regex)
+        '@typescript-eslint/prefer-regexp-exec': 'off',
+      },
+      parserOptions: {
+        tsconfigRootDir: __dirname,
+        project: ['./tsconfig.json'],
+        // this is to properly reference the referenced project database without requirement of compiling it
+        EXPERIMENTAL_useSourceOfProjectReferenceRedirect: true,
+      },
+    },
+  ],
 }
diff --git a/backend/package.json b/backend/package.json
index 08a9bf54d..dab5e50af 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gradido-backend",
-  "version": "1.19.0",
+  "version": "1.19.1",
   "description": "Gradido unified backend providing an API-Service for Gradido Transactions",
   "main": "src/index.ts",
   "repository": "https://github.com/gradido/gradido/backend",
@@ -65,6 +65,7 @@
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-prettier": "^3.4.0",
     "eslint-plugin-promise": "^5.1.0",
+    "eslint-plugin-type-graphql": "^1.0.0",
     "faker": "^5.5.3",
     "jest": "^27.2.4",
     "nodemon": "^2.0.7",
diff --git a/backend/src/apis/HttpRequest.ts b/backend/src/apis/HttpRequest.ts
index 4039e3a98..eff0c408a 100644
--- a/backend/src/apis/HttpRequest.ts
+++ b/backend/src/apis/HttpRequest.ts
@@ -1,16 +1,19 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 import axios from 'axios'
 
 import { backendLogger as logger } from '@/server/logger'
+import LogError from '@/server/LogError'
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
 export const apiPost = async (url: string, payload: unknown): Promise<any> => {
-  logger.trace('POST: url=' + url + ' payload=' + payload)
+  logger.trace('POST', url, payload)
   return axios
     .post(url, payload)
     .then((result) => {
-      logger.trace('POST-Response: result=' + result)
+      logger.trace('POST-Response', result)
       if (result.status !== 200) {
-        throw new Error('HTTP Status Error ' + result.status)
+        throw new LogError('HTTP Status Error', result.status)
       }
       if (result.data.state !== 'success') {
         throw new Error(result.data.msg)
@@ -28,9 +31,9 @@ export const apiGet = async (url: string): Promise<any> => {
   return axios
     .get(url)
     .then((result) => {
-      logger.trace('GET-Response: result=' + result)
+      logger.trace('GET-Response', result)
       if (result.status !== 200) {
-        throw new Error('HTTP Status Error ' + result.status)
+        throw new LogError('HTTP Status Error', result.status)
       }
       if (!['success', 'warning'].includes(result.data.state)) {
         throw new Error(result.data.msg)
diff --git a/backend/src/apis/KlicktippController.ts b/backend/src/apis/KlicktippController.ts
index 824d40af2..fe9ad563a 100644
--- a/backend/src/apis/KlicktippController.ts
+++ b/backend/src/apis/KlicktippController.ts
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 import { KlicktippConnector } from './klicktippConnector'
diff --git a/backend/src/apis/klicktippConnector.ts b/backend/src/apis/klicktippConnector.ts
index b084112ae..0ff741604 100644
--- a/backend/src/apis/klicktippConnector.ts
+++ b/backend/src/apis/klicktippConnector.ts
@@ -1,3 +1,7 @@
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 import axios, { AxiosRequestConfig, Method } from 'axios'
diff --git a/backend/src/auth/RIGHTS.ts b/backend/src/auth/RIGHTS.ts
index 8b0e82c86..22be48e40 100644
--- a/backend/src/auth/RIGHTS.ts
+++ b/backend/src/auth/RIGHTS.ts
@@ -54,4 +54,5 @@ export enum RIGHTS {
   UPDATE_CONTRIBUTION_LINK = 'UPDATE_CONTRIBUTION_LINK',
   ADMIN_CREATE_CONTRIBUTION_MESSAGE = 'ADMIN_CREATE_CONTRIBUTION_MESSAGE',
   DENY_CONTRIBUTION = 'DENY_CONTRIBUTION',
+  ADMIN_OPEN_CREATIONS = 'ADMIN_OPEN_CREATIONS',
 }
diff --git a/backend/src/emails/sendEmailTranslated.test.ts b/backend/src/emails/sendEmailTranslated.test.ts
index 79ba1cd77..f3c75a7a6 100644
--- a/backend/src/emails/sendEmailTranslated.test.ts
+++ b/backend/src/emails/sendEmailTranslated.test.ts
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/unbound-method */
 import { createTransport } from 'nodemailer'
 import { logger, i18n } from '@test/testSetup'
 import CONFIG from '@/config'
diff --git a/backend/src/emails/sendEmailTranslated.ts b/backend/src/emails/sendEmailTranslated.ts
index 9fa8af73f..d8ecd3d38 100644
--- a/backend/src/emails/sendEmailTranslated.ts
+++ b/backend/src/emails/sendEmailTranslated.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
 import CONFIG from '@/config'
 import { backendLogger as logger } from '@/server/logger'
 import path from 'path'
diff --git a/backend/src/emails/sendEmailVariants.test.ts b/backend/src/emails/sendEmailVariants.test.ts
index 9f30a8ce1..21c10bdad 100644
--- a/backend/src/emails/sendEmailVariants.test.ts
+++ b/backend/src/emails/sendEmailVariants.test.ts
@@ -1,5 +1,8 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
 /* eslint-disable @typescript-eslint/no-explicit-any */
-
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 import Decimal from 'decimal.js-light'
 import { testEnvironment } from '@test/helpers'
 import { logger, i18n as localization } from '@test/testSetup'
diff --git a/backend/src/federation/client/1_0/FederationClient.ts b/backend/src/federation/client/1_0/FederationClient.ts
index 1c0ec4996..d4ed5960b 100644
--- a/backend/src/federation/client/1_0/FederationClient.ts
+++ b/backend/src/federation/client/1_0/FederationClient.ts
@@ -1,3 +1,6 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 import { gql } from 'graphql-request'
 import { backendLogger as logger } from '@/server/logger'
 import { Community as DbCommunity } from '@entity/Community'
diff --git a/backend/src/federation/client/1_1/FederationClient.ts b/backend/src/federation/client/1_1/FederationClient.ts
index 1c0ec4996..122fcf5dc 100644
--- a/backend/src/federation/client/1_1/FederationClient.ts
+++ b/backend/src/federation/client/1_1/FederationClient.ts
@@ -1,3 +1,6 @@
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
 import { gql } from 'graphql-request'
 import { backendLogger as logger } from '@/server/logger'
 import { Community as DbCommunity } from '@entity/Community'
diff --git a/backend/src/federation/validateCommunities.test.ts b/backend/src/federation/validateCommunities.test.ts
index 4899a2987..599564ea6 100644
--- a/backend/src/federation/validateCommunities.test.ts
+++ b/backend/src/federation/validateCommunities.test.ts
@@ -1,3 +1,7 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/unbound-method */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-call */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
@@ -150,7 +154,8 @@ describe('validate Communities', () => {
       })
       it('logs unsupported api for community with api 2_0 ', () => {
         expect(logger.warn).toBeCalledWith(
-          `Federation: dbCom: ${dbCom.id} with unsupported apiVersion=2_0; supported versions=1_0,1_1`,
+          `Federation: dbCom: ${dbCom.id} with unsupported apiVersion=2_0; supported versions`,
+          ['1_0', '1_1'],
         )
       })
     })
diff --git a/backend/src/federation/validateCommunities.ts b/backend/src/federation/validateCommunities.ts
index f5a0c50ac..157d83bb5 100644
--- a/backend/src/federation/validateCommunities.ts
+++ b/backend/src/federation/validateCommunities.ts
@@ -8,14 +8,14 @@ import { backendLogger as logger } from '@/server/logger'
 import { ApiVersionType } from './enum/apiVersionType'
 import LogError from '@/server/LogError'
 
-export async function startValidateCommunities(timerInterval: number): Promise<void> {
+export function startValidateCommunities(timerInterval: number): void {
   logger.info(
     `Federation: startValidateCommunities loop with an interval of ${timerInterval} ms...`,
   )
   // TODO: replace the timer-loop by an event-based communication to verify announced foreign communities
   // better to use setTimeout twice than setInterval once -> see https://javascript.info/settimeout-setinterval
   setTimeout(function run() {
-    validateCommunities()
+    void validateCommunities()
     setTimeout(run, timerInterval)
   }, timerInterval)
 }
@@ -27,8 +27,8 @@ export async function validateCommunities(): Promise<void> {
     .getMany()
 
   logger.debug(`Federation: found ${dbCommunities.length} dbCommunities`)
-  dbCommunities.forEach(async function (dbCom) {
-    logger.debug(`Federation: dbCom: ${JSON.stringify(dbCom)}`)
+  for (const dbCom of dbCommunities) {
+    logger.debug('Federation: dbCom', dbCom)
     const apiValueStrings: string[] = Object.values(ApiVersionType)
     logger.debug(`suppported ApiVersions=`, apiValueStrings)
     if (apiValueStrings.includes(dbCom.apiVersion)) {
@@ -38,11 +38,13 @@ export async function validateCommunities(): Promise<void> {
       try {
         const pubKey = await invokeVersionedRequestGetPublicKey(dbCom)
         logger.info(
-          `Federation: received publicKey=${pubKey} from endpoint=${dbCom.endPoint}/${dbCom.apiVersion}`,
+          'Federation: received publicKey from endpoint',
+          pubKey,
+          `${dbCom.endPoint}/${dbCom.apiVersion}`,
         )
         if (pubKey && pubKey === dbCom.publicKey.toString('hex')) {
           logger.info(`Federation: matching publicKey:  ${pubKey}`)
-          DbCommunity.update({ id: dbCom.id }, { verifiedAt: new Date() })
+          await DbCommunity.update({ id: dbCom.id }, { verifiedAt: new Date() })
           logger.debug(`Federation: updated dbCom:  ${JSON.stringify(dbCom)}`)
         }
         /*
@@ -58,10 +60,11 @@ export async function validateCommunities(): Promise<void> {
       }
     } else {
       logger.warn(
-        `Federation: dbCom: ${dbCom.id} with unsupported apiVersion=${dbCom.apiVersion}; supported versions=${apiValueStrings}`,
+        `Federation: dbCom: ${dbCom.id} with unsupported apiVersion=${dbCom.apiVersion}; supported versions`,
+        apiValueStrings,
       )
     }
-  })
+  }
 }
 
 function isLogError(err: unknown) {
diff --git a/backend/src/graphql/arg/ContributionLinkArgs.ts b/backend/src/graphql/arg/ContributionLinkArgs.ts
index 7344a28ff..cf0465501 100644
--- a/backend/src/graphql/arg/ContributionLinkArgs.ts
+++ b/backend/src/graphql/arg/ContributionLinkArgs.ts
@@ -22,7 +22,7 @@ export default class ContributionLinkArgs {
   validTo?: string | null
 
   @Field(() => Decimal, { nullable: true })
-  maxAmountPerMonth: Decimal | null
+  maxAmountPerMonth?: Decimal | null
 
   @Field(() => Int)
   maxPerCycle: number
diff --git a/backend/src/graphql/arg/ContributionMessageArgs.ts b/backend/src/graphql/arg/ContributionMessageArgs.ts
index dd75baed0..8b44756a6 100644
--- a/backend/src/graphql/arg/ContributionMessageArgs.ts
+++ b/backend/src/graphql/arg/ContributionMessageArgs.ts
@@ -1,9 +1,9 @@
-import { ArgsType, Field, InputType } from 'type-graphql'
+import { ArgsType, Field, Int, InputType } from 'type-graphql'
 
 @InputType()
 @ArgsType()
 export default class ContributionMessageArgs {
-  @Field(() => Number)
+  @Field(() => Int)
   contributionId: number
 
   @Field(() => String)
diff --git a/backend/src/graphql/arg/CreateUserArgs.ts b/backend/src/graphql/arg/CreateUserArgs.ts
index af915b91a..56acfd63d 100644
--- a/backend/src/graphql/arg/CreateUserArgs.ts
+++ b/backend/src/graphql/arg/CreateUserArgs.ts
@@ -11,11 +11,11 @@ export default class CreateUserArgs {
   @Field(() => String)
   lastName: string
 
-  @Field(() => String)
-  language?: string // Will default to DEFAULT_LANGUAGE
+  @Field(() => String, { nullable: true })
+  language?: string | null
 
   @Field(() => Int, { nullable: true })
-  publisherId: number
+  publisherId?: number | null
 
   @Field(() => String, { nullable: true })
   redeemCode?: string | null
diff --git a/backend/src/graphql/arg/Paginated.ts b/backend/src/graphql/arg/Paginated.ts
index 97326caf2..290dba337 100644
--- a/backend/src/graphql/arg/Paginated.ts
+++ b/backend/src/graphql/arg/Paginated.ts
@@ -1,3 +1,4 @@
+/* eslint-disable type-graphql/invalid-nullable-input-type */
 import { ArgsType, Field, Int } from 'type-graphql'
 import { Order } from '@enum/Order'
 
diff --git a/backend/src/graphql/arg/SearchUsersArgs.ts b/backend/src/graphql/arg/SearchUsersArgs.ts
index 38057762d..39996efca 100644
--- a/backend/src/graphql/arg/SearchUsersArgs.ts
+++ b/backend/src/graphql/arg/SearchUsersArgs.ts
@@ -7,11 +7,14 @@ export default class SearchUsersArgs {
   searchText: string
 
   @Field(() => Int, { nullable: true })
+  // eslint-disable-next-line type-graphql/invalid-nullable-input-type
   currentPage?: number
 
   @Field(() => Int, { nullable: true })
+  // eslint-disable-next-line type-graphql/invalid-nullable-input-type
   pageSize?: number
 
+  // eslint-disable-next-line type-graphql/wrong-decorator-signature
   @Field(() => SearchUsersFilters, { nullable: true, defaultValue: null })
-  filters: SearchUsersFilters
+  filters?: SearchUsersFilters | null
 }
diff --git a/backend/src/graphql/arg/SearchUsersFilters.ts b/backend/src/graphql/arg/SearchUsersFilters.ts
index dc19d456c..efcdfa00d 100644
--- a/backend/src/graphql/arg/SearchUsersFilters.ts
+++ b/backend/src/graphql/arg/SearchUsersFilters.ts
@@ -3,8 +3,8 @@ import { Field, InputType } from 'type-graphql'
 @InputType()
 export default class SearchUsersFilters {
   @Field(() => Boolean, { nullable: true, defaultValue: null })
-  byActivated: boolean
+  byActivated?: boolean | null
 
   @Field(() => Boolean, { nullable: true, defaultValue: null })
-  byDeleted: boolean
+  byDeleted?: boolean | null
 }
diff --git a/backend/src/graphql/arg/TransactionLinkFilters.ts b/backend/src/graphql/arg/TransactionLinkFilters.ts
index 291d244c3..13d630d17 100644
--- a/backend/src/graphql/arg/TransactionLinkFilters.ts
+++ b/backend/src/graphql/arg/TransactionLinkFilters.ts
@@ -1,13 +1,14 @@
+/* eslint-disable type-graphql/invalid-nullable-input-type */
 import { Field, InputType } from 'type-graphql'
 
 @InputType()
 export default class TransactionLinkFilters {
   @Field(() => Boolean, { nullable: true })
-  withDeleted: boolean
+  withDeleted?: boolean
 
   @Field(() => Boolean, { nullable: true })
-  withExpired: boolean
+  withExpired?: boolean
 
   @Field(() => Boolean, { nullable: true })
-  withRedeemed: boolean
+  withRedeemed?: boolean
 }
diff --git a/backend/src/graphql/arg/UnsecureLoginArgs.ts b/backend/src/graphql/arg/UnsecureLoginArgs.ts
index ac69e7441..a2a7bb683 100644
--- a/backend/src/graphql/arg/UnsecureLoginArgs.ts
+++ b/backend/src/graphql/arg/UnsecureLoginArgs.ts
@@ -9,5 +9,5 @@ export default class UnsecureLoginArgs {
   password: string
 
   @Field(() => Int, { nullable: true })
-  publisherId: number
+  publisherId?: number | null
 }
diff --git a/backend/src/graphql/arg/UpdateUserInfosArgs.ts b/backend/src/graphql/arg/UpdateUserInfosArgs.ts
index b45539487..985d3fed6 100644
--- a/backend/src/graphql/arg/UpdateUserInfosArgs.ts
+++ b/backend/src/graphql/arg/UpdateUserInfosArgs.ts
@@ -1,4 +1,4 @@
-import { ArgsType, Field } from 'type-graphql'
+import { ArgsType, Field, Int } from 'type-graphql'
 
 @ArgsType()
 export default class UpdateUserInfosArgs {
@@ -11,8 +11,8 @@ export default class UpdateUserInfosArgs {
   @Field({ nullable: true })
   language?: string
 
-  @Field({ nullable: true })
-  publisherId?: number
+  @Field(() => Int, { nullable: true })
+  publisherId?: number | null
 
   @Field({ nullable: true })
   password?: string
diff --git a/backend/src/graphql/directive/isAuthorized.ts b/backend/src/graphql/directive/isAuthorized.ts
index 59daa89f1..709f470d4 100644
--- a/backend/src/graphql/directive/isAuthorized.ts
+++ b/backend/src/graphql/directive/isAuthorized.ts
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-call */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 
 import { AuthChecker } from 'type-graphql'
diff --git a/backend/src/graphql/model/Balance.ts b/backend/src/graphql/model/Balance.ts
index f04b235ee..9b54f6987 100644
--- a/backend/src/graphql/model/Balance.ts
+++ b/backend/src/graphql/model/Balance.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field } from 'type-graphql'
+import { ObjectType, Field, Int, Float } from 'type-graphql'
 import Decimal from 'decimal.js-light'
 
 @ObjectType()
@@ -19,14 +19,14 @@ export class Balance {
   @Field(() => Decimal)
   balance: Decimal
 
-  @Field(() => Number, { nullable: true })
+  @Field(() => Float, { nullable: true })
   balanceGDT: number | null
 
   // the count of all transactions
-  @Field(() => Number)
+  @Field(() => Int)
   count: number
 
   // the count of transaction links
-  @Field(() => Number)
+  @Field(() => Int)
   linkCount: number
 }
diff --git a/backend/src/graphql/model/Community.ts b/backend/src/graphql/model/Community.ts
index 466028d00..0cd1926f5 100644
--- a/backend/src/graphql/model/Community.ts
+++ b/backend/src/graphql/model/Community.ts
@@ -1,6 +1,8 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
-import { ObjectType, Field } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 
 @ObjectType()
 export class Community {
@@ -14,7 +16,7 @@ export class Community {
     }
   }
 
-  @Field(() => Number)
+  @Field(() => Int)
   id: number
 
   @Field(() => String)
diff --git a/backend/src/graphql/model/CommunityStatistics.ts b/backend/src/graphql/model/CommunityStatistics.ts
index 87ef595af..4864b630d 100644
--- a/backend/src/graphql/model/CommunityStatistics.ts
+++ b/backend/src/graphql/model/CommunityStatistics.ts
@@ -1,9 +1,9 @@
-import { ObjectType, Field } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import Decimal from 'decimal.js-light'
 
 @ObjectType()
 export class DynamicStatisticsFields {
-  @Field(() => Number)
+  @Field(() => Int)
   activeUsers: number
 
   @Field(() => Decimal)
@@ -15,13 +15,13 @@ export class DynamicStatisticsFields {
 
 @ObjectType()
 export class CommunityStatistics {
-  @Field(() => Number)
+  @Field(() => Int)
   allUsers: number
 
-  @Field(() => Number)
+  @Field(() => Int)
   totalUsers: number
 
-  @Field(() => Number)
+  @Field(() => Int)
   deletedUsers: number
 
   @Field(() => Decimal)
diff --git a/backend/src/graphql/model/Contribution.ts b/backend/src/graphql/model/Contribution.ts
index b966b714e..a683534af 100644
--- a/backend/src/graphql/model/Contribution.ts
+++ b/backend/src/graphql/model/Contribution.ts
@@ -23,7 +23,7 @@ export class Contribution {
     this.deletedBy = contribution.deletedBy
   }
 
-  @Field(() => Number)
+  @Field(() => Int)
   id: number
 
   @Field(() => String, { nullable: true })
@@ -44,25 +44,25 @@ export class Contribution {
   @Field(() => Date, { nullable: true })
   confirmedAt: Date | null
 
-  @Field(() => Number, { nullable: true })
+  @Field(() => Int, { nullable: true })
   confirmedBy: number | null
 
   @Field(() => Date, { nullable: true })
   deniedAt: Date | null
 
-  @Field(() => Number, { nullable: true })
+  @Field(() => Int, { nullable: true })
   deniedBy: number | null
 
   @Field(() => Date, { nullable: true })
   deletedAt: Date | null
 
-  @Field(() => Number, { nullable: true })
+  @Field(() => Int, { nullable: true })
   deletedBy: number | null
 
   @Field(() => Date)
   contributionDate: Date
 
-  @Field(() => Number)
+  @Field(() => Int)
   messagesCount: number
 
   @Field(() => String)
diff --git a/backend/src/graphql/model/ContributionLink.ts b/backend/src/graphql/model/ContributionLink.ts
index 9fe9eccd6..7a06f8dff 100644
--- a/backend/src/graphql/model/ContributionLink.ts
+++ b/backend/src/graphql/model/ContributionLink.ts
@@ -21,7 +21,7 @@ export class ContributionLink {
     this.link = CONFIG.COMMUNITY_REDEEM_CONTRIBUTION_URL.replace(/{code}/g, this.code)
   }
 
-  @Field(() => Number)
+  @Field(() => Int)
   id: number
 
   @Field(() => Decimal)
diff --git a/backend/src/graphql/model/ContributionLinkList.ts b/backend/src/graphql/model/ContributionLinkList.ts
index 412d0bf7b..d2c347b27 100644
--- a/backend/src/graphql/model/ContributionLinkList.ts
+++ b/backend/src/graphql/model/ContributionLinkList.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import { ContributionLink } from '@model/ContributionLink'
 
 @ObjectType()
@@ -6,6 +6,6 @@ export class ContributionLinkList {
   @Field(() => [ContributionLink])
   links: ContributionLink[]
 
-  @Field(() => Number)
+  @Field(() => Int)
   count: number
 }
diff --git a/backend/src/graphql/model/ContributionMessage.ts b/backend/src/graphql/model/ContributionMessage.ts
index d757db136..6bd6a4715 100644
--- a/backend/src/graphql/model/ContributionMessage.ts
+++ b/backend/src/graphql/model/ContributionMessage.ts
@@ -1,4 +1,4 @@
-import { Field, ObjectType } from 'type-graphql'
+import { Field, Int, ObjectType } from 'type-graphql'
 import { ContributionMessage as DbContributionMessage } from '@entity/ContributionMessage'
 import { User } from '@entity/User'
 
@@ -16,7 +16,7 @@ export class ContributionMessage {
     this.isModerator = contributionMessage.isModerator
   }
 
-  @Field(() => Number)
+  @Field(() => Int)
   id: number
 
   @Field(() => String)
@@ -26,7 +26,7 @@ export class ContributionMessage {
   createdAt: Date
 
   @Field(() => Date, { nullable: true })
-  updatedAt?: Date | null
+  updatedAt: Date | null
 
   @Field(() => String)
   type: string
@@ -37,7 +37,7 @@ export class ContributionMessage {
   @Field(() => String, { nullable: true })
   userLastName: string | null
 
-  @Field(() => Number, { nullable: true })
+  @Field(() => Int, { nullable: true })
   userId: number | null
 
   @Field(() => Boolean)
@@ -45,7 +45,7 @@ export class ContributionMessage {
 }
 @ObjectType()
 export class ContributionMessageListResult {
-  @Field(() => Number)
+  @Field(() => Int)
   count: number
 
   @Field(() => [ContributionMessage])
diff --git a/backend/src/graphql/model/GdtEntry.ts b/backend/src/graphql/model/GdtEntry.ts
index 43529fb06..bbf1cceef 100644
--- a/backend/src/graphql/model/GdtEntry.ts
+++ b/backend/src/graphql/model/GdtEntry.ts
@@ -1,6 +1,8 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
-import { ObjectType, Field } from 'type-graphql'
+import { ObjectType, Field, Float, Int } from 'type-graphql'
 import { GdtEntryType } from '@enum/GdtEntryType'
 
 @ObjectType()
@@ -19,10 +21,10 @@ export class GdtEntry {
     this.gdt = json.gdt
   }
 
-  @Field(() => Number)
+  @Field(() => Int)
   id: number
 
-  @Field(() => Number)
+  @Field(() => Float)
   amount: number
 
   @Field(() => String)
@@ -40,15 +42,15 @@ export class GdtEntry {
   @Field(() => GdtEntryType)
   gdtEntryType: GdtEntryType
 
-  @Field(() => Number)
+  @Field(() => Float)
   factor: number
 
-  @Field(() => Number)
+  @Field(() => Float)
   amount2: number
 
-  @Field(() => Number)
+  @Field(() => Float)
   factor2: number
 
-  @Field(() => Number)
+  @Field(() => Float)
   gdt: number
 }
diff --git a/backend/src/graphql/model/GdtEntryList.ts b/backend/src/graphql/model/GdtEntryList.ts
index 9d529b6f3..7c4bffb5a 100644
--- a/backend/src/graphql/model/GdtEntryList.ts
+++ b/backend/src/graphql/model/GdtEntryList.ts
@@ -1,7 +1,10 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 import { GdtEntry } from './GdtEntry'
-import { ObjectType, Field } from 'type-graphql'
+import { ObjectType, Field, Int, Float } from 'type-graphql'
 
 @ObjectType()
 export class GdtEntryList {
@@ -16,15 +19,15 @@ export class GdtEntryList {
   @Field(() => String)
   state: string
 
-  @Field(() => Number)
+  @Field(() => Int)
   count: number
 
   @Field(() => [GdtEntry], { nullable: true })
-  gdtEntries?: GdtEntry[]
+  gdtEntries: GdtEntry[] | null
 
-  @Field(() => Number)
+  @Field(() => Float)
   gdtSum: number
 
-  @Field(() => Number)
+  @Field(() => Float)
   timeUsed: number
 }
diff --git a/backend/src/graphql/model/KlickTipp.ts b/backend/src/graphql/model/KlickTipp.ts
index a7dd9eead..059c7874d 100644
--- a/backend/src/graphql/model/KlickTipp.ts
+++ b/backend/src/graphql/model/KlickTipp.ts
@@ -1,4 +1,5 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 import { ObjectType, Field } from 'type-graphql'
 
diff --git a/backend/src/graphql/model/Transaction.ts b/backend/src/graphql/model/Transaction.ts
index a7329bcef..96b80f9a0 100644
--- a/backend/src/graphql/model/Transaction.ts
+++ b/backend/src/graphql/model/Transaction.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import { Decay } from './Decay'
 import { Transaction as dbTransaction } from '@entity/Transaction'
 import Decimal from 'decimal.js-light'
@@ -41,19 +41,19 @@ export class Transaction {
     this.memo = transaction.memo
     this.creationDate = transaction.creationDate
     this.linkedUser = linkedUser
-    this.linkedTransactionId = transaction.linkedTransactionId
+    this.linkedTransactionId = transaction.linkedTransactionId || null
     this.linkId = transaction.contribution
       ? transaction.contribution.contributionLinkId
-      : transaction.transactionLinkId
+      : transaction.transactionLinkId || null
   }
 
-  @Field(() => Number)
+  @Field(() => Int)
   id: number
 
   @Field(() => User)
   user: User
 
-  @Field(() => Number, { nullable: true })
+  @Field(() => Int, { nullable: true })
   previous: number | null
 
   @Field(() => TransactionTypeId)
@@ -80,10 +80,10 @@ export class Transaction {
   @Field(() => User, { nullable: true })
   linkedUser: User | null
 
-  @Field(() => Number, { nullable: true })
-  linkedTransactionId?: number | null
+  @Field(() => Int, { nullable: true })
+  linkedTransactionId: number | null
 
   // Links to the TransactionLink/ContributionLink when transaction was created by a link
-  @Field(() => Number, { nullable: true })
-  linkId?: number | null
+  @Field(() => Int, { nullable: true })
+  linkId: number | null
 }
diff --git a/backend/src/graphql/model/TransactionLink.ts b/backend/src/graphql/model/TransactionLink.ts
index 416527ec9..b0a8ab184 100644
--- a/backend/src/graphql/model/TransactionLink.ts
+++ b/backend/src/graphql/model/TransactionLink.ts
@@ -21,7 +21,7 @@ export class TransactionLink {
     this.link = CONFIG.COMMUNITY_REDEEM_URL.replace(/{code}/g, this.code)
   }
 
-  @Field(() => Number)
+  @Field(() => Int)
   id: number
 
   @Field(() => User)
diff --git a/backend/src/graphql/model/UnconfirmedContribution.ts b/backend/src/graphql/model/UnconfirmedContribution.ts
index c42b4fd11..75112ecf5 100644
--- a/backend/src/graphql/model/UnconfirmedContribution.ts
+++ b/backend/src/graphql/model/UnconfirmedContribution.ts
@@ -24,12 +24,12 @@ export class UnconfirmedContribution {
   firstName: string
 
   @Field(() => Int)
-  id?: number
+  id: number
 
   @Field(() => String)
   lastName: string
 
-  @Field(() => Number)
+  @Field(() => Int)
   userId: number
 
   @Field(() => String)
@@ -44,7 +44,7 @@ export class UnconfirmedContribution {
   @Field(() => Decimal)
   amount: Decimal
 
-  @Field(() => Number, { nullable: true })
+  @Field(() => Int, { nullable: true })
   moderator: number | null
 
   @Field(() => [Decimal])
@@ -53,6 +53,6 @@ export class UnconfirmedContribution {
   @Field(() => String)
   state: string
 
-  @Field(() => Number)
+  @Field(() => Int)
   messageCount: number
 }
diff --git a/backend/src/graphql/model/User.ts b/backend/src/graphql/model/User.ts
index b4fdcae4f..aeb764941 100644
--- a/backend/src/graphql/model/User.ts
+++ b/backend/src/graphql/model/User.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import { KlickTipp } from './KlickTipp'
 import { User as dbUser } from '@entity/User'
 import { UserContact } from './UserContact'
@@ -28,21 +28,21 @@ export class User {
     this.hideAmountGDT = user.hideAmountGDT
   }
 
-  @Field(() => Number)
+  @Field(() => Int)
   id: number
 
   @Field(() => String)
   gradidoID: string
 
   @Field(() => String, { nullable: true })
-  alias?: string
+  alias: string | null
 
-  @Field(() => Number, { nullable: true })
+  @Field(() => Int, { nullable: true })
   emailId: number | null
 
   // TODO privacy issue here
   @Field(() => String, { nullable: true })
-  email: string
+  email: string | null
 
   @Field(() => UserContact)
   emailContact: UserContact
@@ -72,7 +72,7 @@ export class User {
   hideAmountGDT: boolean
 
   // This is not the users publisherId, but the one of the users who recommend him
-  @Field(() => Number, { nullable: true })
+  @Field(() => Int, { nullable: true })
   publisherId: number | null
 
   @Field(() => Date, { nullable: true })
diff --git a/backend/src/graphql/model/UserAdmin.ts b/backend/src/graphql/model/UserAdmin.ts
index 08dc405ac..e7330471b 100644
--- a/backend/src/graphql/model/UserAdmin.ts
+++ b/backend/src/graphql/model/UserAdmin.ts
@@ -17,7 +17,7 @@ export class UserAdmin {
     this.isAdmin = user.isAdmin
   }
 
-  @Field(() => Number)
+  @Field(() => Int)
   userId: number
 
   @Field(() => String)
@@ -39,10 +39,10 @@ export class UserAdmin {
   hasElopage: boolean
 
   @Field(() => Date, { nullable: true })
-  deletedAt?: Date | null
+  deletedAt: Date | null
 
   @Field(() => String, { nullable: true })
-  emailConfirmationSend?: string
+  emailConfirmationSend: string | null
 
   @Field(() => Date, { nullable: true })
   isAdmin: Date | null
diff --git a/backend/src/graphql/model/UserContact.ts b/backend/src/graphql/model/UserContact.ts
index 796c7f5f3..bb31d0745 100644
--- a/backend/src/graphql/model/UserContact.ts
+++ b/backend/src/graphql/model/UserContact.ts
@@ -1,4 +1,4 @@
-import { ObjectType, Field } from 'type-graphql'
+import { ObjectType, Field, Int } from 'type-graphql'
 import { UserContact as dbUserContact } from '@entity/UserContact'
 
 @ObjectType()
@@ -18,13 +18,13 @@ export class UserContact {
     this.deletedAt = userContact.deletedAt
   }
 
-  @Field(() => Number)
+  @Field(() => Int)
   id: number
 
   @Field(() => String)
   type: string
 
-  @Field(() => Number)
+  @Field(() => Int)
   userId: number
 
   @Field(() => String)
@@ -33,10 +33,10 @@ export class UserContact {
   // @Field(() => BigInt, { nullable: true })
   // emailVerificationCode: BigInt | null
 
-  @Field(() => Number, { nullable: true })
+  @Field(() => Int, { nullable: true })
   emailOptInTypeId: number | null
 
-  @Field(() => Number, { nullable: true })
+  @Field(() => Int, { nullable: true })
   emailResendCount: number | null
 
   @Field(() => Boolean)
diff --git a/backend/src/graphql/resolver/BalanceResolver.ts b/backend/src/graphql/resolver/BalanceResolver.ts
index 65cccf4d4..18aed5ae6 100644
--- a/backend/src/graphql/resolver/BalanceResolver.ts
+++ b/backend/src/graphql/resolver/BalanceResolver.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
 import Decimal from 'decimal.js-light'
 import { Resolver, Query, Ctx, Authorized } from 'type-graphql'
 import { getCustomRepository } from '@dbTools/typeorm'
diff --git a/backend/src/graphql/resolver/CommunityResolver.test.ts b/backend/src/graphql/resolver/CommunityResolver.test.ts
index cb916e47c..95f2ec5dd 100644
--- a/backend/src/graphql/resolver/CommunityResolver.test.ts
+++ b/backend/src/graphql/resolver/CommunityResolver.test.ts
@@ -1,3 +1,6 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/unbound-method */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
diff --git a/backend/src/graphql/resolver/CommunityResolver.ts b/backend/src/graphql/resolver/CommunityResolver.ts
index f56254e1f..4cd0c8f69 100644
--- a/backend/src/graphql/resolver/CommunityResolver.ts
+++ b/backend/src/graphql/resolver/CommunityResolver.ts
@@ -9,7 +9,7 @@ import CONFIG from '@/config'
 export class CommunityResolver {
   @Authorized([RIGHTS.GET_COMMUNITY_INFO])
   @Query(() => Community)
-  async getCommunityInfo(): Promise<Community> {
+  getCommunityInfo(): Community {
     return new Community({
       name: CONFIG.COMMUNITY_NAME,
       description: CONFIG.COMMUNITY_DESCRIPTION,
@@ -20,7 +20,7 @@ export class CommunityResolver {
 
   @Authorized([RIGHTS.COMMUNITIES])
   @Query(() => [Community])
-  async communities(): Promise<Community[]> {
+  communities(): Community[] {
     if (CONFIG.PRODUCTION)
       return [
         new Community({
diff --git a/backend/src/graphql/resolver/ContributionLinkResolver.test.ts b/backend/src/graphql/resolver/ContributionLinkResolver.test.ts
index 62f273829..4563d2a6a 100644
--- a/backend/src/graphql/resolver/ContributionLinkResolver.test.ts
+++ b/backend/src/graphql/resolver/ContributionLinkResolver.test.ts
@@ -1,3 +1,7 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/unbound-method */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 
 import Decimal from 'decimal.js-light'
diff --git a/backend/src/graphql/resolver/ContributionLinkResolver.ts b/backend/src/graphql/resolver/ContributionLinkResolver.ts
index 39f202848..cccf47399 100644
--- a/backend/src/graphql/resolver/ContributionLinkResolver.ts
+++ b/backend/src/graphql/resolver/ContributionLinkResolver.ts
@@ -35,7 +35,7 @@ export class ContributionLinkResolver {
       cycle,
       validFrom,
       validTo,
-      maxAmountPerMonth,
+      maxAmountPerMonth = null,
       maxPerCycle,
     }: ContributionLinkArgs,
   ): Promise<ContributionLink> {
@@ -114,7 +114,7 @@ export class ContributionLinkResolver {
       cycle,
       validFrom,
       validTo,
-      maxAmountPerMonth,
+      maxAmountPerMonth = null,
       maxPerCycle,
     }: ContributionLinkArgs,
     @Arg('id', () => Int) id: number,
diff --git a/backend/src/graphql/resolver/ContributionMessageResolver.test.ts b/backend/src/graphql/resolver/ContributionMessageResolver.test.ts
index f3e5e865d..8b5c5a0a7 100644
--- a/backend/src/graphql/resolver/ContributionMessageResolver.test.ts
+++ b/backend/src/graphql/resolver/ContributionMessageResolver.test.ts
@@ -1,3 +1,8 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/unbound-method */
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
@@ -181,7 +186,7 @@ describe('ContributionMessageResolver', () => {
           )
         })
 
-        it('calls sendAddedContributionMessageEmail', async () => {
+        it('calls sendAddedContributionMessageEmail', () => {
           expect(sendAddedContributionMessageEmail).toBeCalledWith({
             firstName: 'Bibi',
             lastName: 'Bloxberg',
diff --git a/backend/src/graphql/resolver/ContributionMessageResolver.ts b/backend/src/graphql/resolver/ContributionMessageResolver.ts
index adfcdf160..e9258490e 100644
--- a/backend/src/graphql/resolver/ContributionMessageResolver.ts
+++ b/backend/src/graphql/resolver/ContributionMessageResolver.ts
@@ -1,4 +1,5 @@
-import { Arg, Args, Authorized, Ctx, Mutation, Query, Resolver } from 'type-graphql'
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
+import { Arg, Args, Authorized, Ctx, Int, Mutation, Query, Resolver } from 'type-graphql'
 import { getConnection } from '@dbTools/typeorm'
 
 import { ContributionMessage as DbContributionMessage } from '@entity/ContributionMessage'
@@ -68,7 +69,7 @@ export class ContributionMessageResolver {
   @Authorized([RIGHTS.LIST_ALL_CONTRIBUTION_MESSAGES])
   @Query(() => ContributionMessageListResult)
   async listContributionMessages(
-    @Arg('contributionId') contributionId: number,
+    @Arg('contributionId', () => Int) contributionId: number,
     @Args()
     { currentPage = 1, pageSize = 5, order = Order.DESC }: Paginated,
   ): Promise<ContributionMessageListResult> {
diff --git a/backend/src/graphql/resolver/ContributionResolver.test.ts b/backend/src/graphql/resolver/ContributionResolver.test.ts
index 27f6d1c2a..274067ba0 100644
--- a/backend/src/graphql/resolver/ContributionResolver.test.ts
+++ b/backend/src/graphql/resolver/ContributionResolver.test.ts
@@ -1,3 +1,8 @@
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/unbound-method */
+/* eslint-disable @typescript-eslint/no-unsafe-return */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
@@ -176,7 +181,7 @@ describe('ContributionResolver', () => {
         })
       })
 
-      afterAll(async () => {
+      afterAll(() => {
         resetToken()
       })
 
@@ -265,7 +270,7 @@ describe('ContributionResolver', () => {
       })
 
       describe('valid input', () => {
-        it('creates contribution', async () => {
+        it('creates contribution', () => {
           expect(pendingContribution.data.createContribution).toMatchObject({
             id: expect.any(Number),
             amount: '100',
@@ -311,7 +316,7 @@ describe('ContributionResolver', () => {
         })
       })
 
-      afterAll(async () => {
+      afterAll(() => {
         resetToken()
       })
 
@@ -452,7 +457,7 @@ describe('ContributionResolver', () => {
               id: pendingContribution.data.createContribution.id,
             })
             contribution.contributionStatus = ContributionStatus.DELETED
-            contribution.save()
+            await contribution.save()
             await mutate({
               mutation: login,
               variables: { email: 'bibi@bloxberg.de', password: 'Aa12345_' },
@@ -464,7 +469,7 @@ describe('ContributionResolver', () => {
               id: pendingContribution.data.createContribution.id,
             })
             contribution.contributionStatus = ContributionStatus.PENDING
-            contribution.save()
+            await contribution.save()
           })
 
           it('throws an error', async () => {
@@ -636,7 +641,7 @@ describe('ContributionResolver', () => {
         })
       })
 
-      afterAll(async () => {
+      afterAll(() => {
         resetToken()
       })
 
@@ -820,7 +825,7 @@ describe('ContributionResolver', () => {
           )
         })
 
-        it('calls sendContributionDeniedEmail', async () => {
+        it('calls sendContributionDeniedEmail', () => {
           expect(sendContributionDeniedEmail).toBeCalledWith({
             firstName: 'Bibi',
             lastName: 'Bloxberg',
@@ -856,7 +861,7 @@ describe('ContributionResolver', () => {
         })
       })
 
-      afterAll(async () => {
+      afterAll(() => {
         resetToken()
       })
 
@@ -1009,7 +1014,7 @@ describe('ContributionResolver', () => {
         })
       })
 
-      afterAll(async () => {
+      afterAll(() => {
         resetToken()
       })
 
@@ -1140,7 +1145,7 @@ describe('ContributionResolver', () => {
         })
       })
 
-      afterAll(async () => {
+      afterAll(() => {
         resetToken()
       })
 
@@ -1720,7 +1725,7 @@ describe('ContributionResolver', () => {
           })
         })
 
-        afterAll(async () => {
+        afterAll(() => {
           resetToken()
         })
 
@@ -1798,7 +1803,7 @@ describe('ContributionResolver', () => {
           })
         })
 
-        afterAll(async () => {
+        afterAll(() => {
           resetToken()
         })
 
@@ -1913,7 +1918,7 @@ describe('ContributionResolver', () => {
           })
 
           describe('valid user to create for', () => {
-            beforeAll(async () => {
+            beforeAll(() => {
               variables.email = 'bibi@bloxberg.de'
               variables.creationDate = 'invalid-date'
             })
@@ -2019,7 +2024,7 @@ describe('ContributionResolver', () => {
                 ).resolves.toEqual(
                   expect.objectContaining({
                     data: {
-                      adminCreateContribution: [1000, 1000, 590],
+                      adminCreateContribution: ['1000', '1000', '590'],
                     },
                   }),
                 )
@@ -2386,7 +2391,7 @@ describe('ContributionResolver', () => {
               )
             })
 
-            it('calls sendContributionDeletedEmail', async () => {
+            it('calls sendContributionDeletedEmail', () => {
               expect(sendContributionDeletedEmail).toBeCalledWith({
                 firstName: 'Peter',
                 lastName: 'Lustig',
@@ -2551,7 +2556,7 @@ describe('ContributionResolver', () => {
               expect(transaction[0].typeId).toEqual(1)
             })
 
-            it('calls sendContributionConfirmedEmail', async () => {
+            it('calls sendContributionConfirmedEmail', () => {
               expect(sendContributionConfirmedEmail).toBeCalledWith({
                 firstName: 'Bibi',
                 lastName: 'Bloxberg',
diff --git a/backend/src/graphql/resolver/ContributionResolver.ts b/backend/src/graphql/resolver/ContributionResolver.ts
index 2469f60ba..88bfde902 100644
--- a/backend/src/graphql/resolver/ContributionResolver.ts
+++ b/backend/src/graphql/resolver/ContributionResolver.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
 import Decimal from 'decimal.js-light'
 import { Arg, Args, Authorized, Ctx, Int, Mutation, Query, Resolver } from 'type-graphql'
 import { IsNull, getConnection } from '@dbTools/typeorm'
@@ -27,11 +28,11 @@ import { RIGHTS } from '@/auth/RIGHTS'
 import { Context, getUser, getClientTimezoneOffset } from '@/server/context'
 import { backendLogger as logger } from '@/server/logger'
 import {
-  getCreationDates,
   getUserCreation,
   validateContribution,
   updateCreations,
   isValidDateString,
+  getOpenCreations,
 } from './util/creations'
 import { MEMO_MAX_CHARS, MEMO_MIN_CHARS } from './const/const'
 import {
@@ -131,7 +132,7 @@ export class ContributionResolver {
     @Args()
     { currentPage = 1, pageSize = 5, order = Order.DESC }: Paginated,
     @Arg('statusFilter', () => [ContributionStatus], { nullable: true })
-    statusFilter?: ContributionStatus[],
+    statusFilter?: ContributionStatus[] | null,
   ): Promise<ContributionListResult> {
     const user = getUser(context)
 
@@ -156,7 +157,7 @@ export class ContributionResolver {
     @Args()
     { currentPage = 1, pageSize = 5, order = Order.DESC }: Paginated,
     @Arg('statusFilter', () => [ContributionStatus], { nullable: true })
-    statusFilter?: ContributionStatus[],
+    statusFilter?: ContributionStatus[] | null,
   ): Promise<ContributionListResult> {
     const [dbContributions, count] = await findContributions(
       order,
@@ -239,14 +240,14 @@ export class ContributionResolver {
     contributionMessage.isModerator = false
     contributionMessage.userId = user.id
     contributionMessage.type = ContributionMessageType.HISTORY
-    ContributionMessage.save(contributionMessage)
+    await ContributionMessage.save(contributionMessage)
 
     contributionToUpdate.amount = amount
     contributionToUpdate.memo = memo
     contributionToUpdate.contributionDate = new Date(creationDate)
     contributionToUpdate.contributionStatus = ContributionStatus.PENDING
     contributionToUpdate.updatedAt = new Date()
-    DbContribution.save(contributionToUpdate)
+    await DbContribution.save(contributionToUpdate)
 
     await EVENT_CONTRIBUTION_UPDATE(user.id, contributionId, amount)
 
@@ -254,7 +255,7 @@ export class ContributionResolver {
   }
 
   @Authorized([RIGHTS.ADMIN_CREATE_CONTRIBUTION])
-  @Mutation(() => [Number])
+  @Mutation(() => [Decimal])
   async adminCreateContribution(
     @Args() { email, amount, memo, creationDate }: AdminCreateContributionArgs,
     @Ctx() context: Context,
@@ -384,7 +385,7 @@ export class ContributionResolver {
     @Args()
     { currentPage = 1, pageSize = 3, order = Order.DESC }: Paginated,
     @Arg('statusFilter', () => [ContributionStatus], { nullable: true })
-    statusFilter?: ContributionStatus[],
+    statusFilter?: ContributionStatus[] | null,
   ): Promise<ContributionListResult> {
     const [dbContributions, count] = await findContributions(
       order,
@@ -433,7 +434,7 @@ export class ContributionResolver {
 
     await EVENT_ADMIN_CONTRIBUTION_DELETE(contribution.userId, contribution.id, contribution.amount)
 
-    sendContributionDeletedEmail({
+    void sendContributionDeletedEmail({
       firstName: user.firstName,
       lastName: user.lastName,
       email: user.emailContact.email,
@@ -527,7 +528,7 @@ export class ContributionResolver {
 
         await queryRunner.commitTransaction()
         logger.info('creation commited successfuly.')
-        sendContributionConfirmedEmail({
+        void sendContributionConfirmedEmail({
           firstName: user.firstName,
           lastName: user.lastName,
           email: user.emailContact.email,
@@ -580,21 +581,17 @@ export class ContributionResolver {
 
   @Authorized([RIGHTS.OPEN_CREATIONS])
   @Query(() => [OpenCreation])
-  async openCreations(
-    @Arg('userId', () => Int, { nullable: true }) userId: number | null,
+  async openCreations(@Ctx() context: Context): Promise<OpenCreation[]> {
+    return getOpenCreations(getUser(context).id, getClientTimezoneOffset(context))
+  }
+
+  @Authorized([RIGHTS.ADMIN_OPEN_CREATIONS])
+  @Query(() => [OpenCreation])
+  async adminOpenCreations(
+    @Arg('userId', () => Int) userId: number,
     @Ctx() context: Context,
   ): Promise<OpenCreation[]> {
-    const id = userId || getUser(context).id
-    const clientTimezoneOffset = getClientTimezoneOffset(context)
-    const creationDates = getCreationDates(clientTimezoneOffset)
-    const creations = await getUserCreation(id, clientTimezoneOffset)
-    return creationDates.map((date, index) => {
-      return {
-        month: date.getMonth(),
-        year: date.getFullYear(),
-        amount: creations[index],
-      }
-    })
+    return getOpenCreations(userId, getClientTimezoneOffset(context))
   }
 
   @Authorized([RIGHTS.DENY_CONTRIBUTION])
@@ -641,7 +638,7 @@ export class ContributionResolver {
       contributionToUpdate.amount,
     )
 
-    sendContributionDeniedEmail({
+    void sendContributionDeniedEmail({
       firstName: user.firstName,
       lastName: user.lastName,
       email: user.emailContact.email,
diff --git a/backend/src/graphql/resolver/EmailOptinCodes.test.ts b/backend/src/graphql/resolver/EmailOptinCodes.test.ts
index 988595723..47fb3963c 100644
--- a/backend/src/graphql/resolver/EmailOptinCodes.test.ts
+++ b/backend/src/graphql/resolver/EmailOptinCodes.test.ts
@@ -1,3 +1,6 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
diff --git a/backend/src/graphql/resolver/GdtResolver.ts b/backend/src/graphql/resolver/GdtResolver.ts
index 1745e7bbd..e12f92458 100644
--- a/backend/src/graphql/resolver/GdtResolver.ts
+++ b/backend/src/graphql/resolver/GdtResolver.ts
@@ -1,4 +1,7 @@
-import { Resolver, Query, Args, Ctx, Authorized, Arg } from 'type-graphql'
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+import { Resolver, Query, Args, Ctx, Authorized, Arg, Int, Float } from 'type-graphql'
 
 import { GdtEntryList } from '@model/GdtEntryList'
 import { Order } from '@enum/Order'
@@ -23,6 +26,7 @@ export class GdtResolver {
 
     try {
       const resultGDT = await apiGet(
+        // eslint-disable-next-line @typescript-eslint/restrict-template-expressions
         `${CONFIG.GDT_API_URL}/GdtEntries/listPerEmailApi/${userEntity.emailContact.email}/${currentPage}/${pageSize}/${order}`,
       )
       if (!resultGDT.success) {
@@ -35,7 +39,7 @@ export class GdtResolver {
   }
 
   @Authorized([RIGHTS.GDT_BALANCE])
-  @Query(() => Number)
+  @Query(() => Float, { nullable: true })
   async gdtBalance(@Ctx() context: Context): Promise<number | null> {
     const user = getUser(context)
     try {
@@ -54,9 +58,9 @@ export class GdtResolver {
   }
 
   @Authorized([RIGHTS.EXIST_PID])
-  @Query(() => Number)
+  @Query(() => Int)
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
-  async existPid(@Arg('pid') pid: number): Promise<number> {
+  async existPid(@Arg('pid', () => Int) pid: number): Promise<number> {
     // load user
     const resultPID = await apiGet(`${CONFIG.GDT_API_URL}/publishers/checkPidApi/${pid}`)
     if (!resultPID.success) {
diff --git a/backend/src/graphql/resolver/KlicktippResolver.ts b/backend/src/graphql/resolver/KlicktippResolver.ts
index 4f88ccdc1..dd137f07c 100644
--- a/backend/src/graphql/resolver/KlicktippResolver.ts
+++ b/backend/src/graphql/resolver/KlicktippResolver.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-unsafe-return */
 import { Resolver, Query, Authorized, Arg, Mutation, Args } from 'type-graphql'
 
 import SubscribeNewsletterArgs from '@arg/SubscribeNewsletterArgs'
diff --git a/backend/src/graphql/resolver/StatisticsResolver.ts b/backend/src/graphql/resolver/StatisticsResolver.ts
index e91840f10..38d0000cb 100644
--- a/backend/src/graphql/resolver/StatisticsResolver.ts
+++ b/backend/src/graphql/resolver/StatisticsResolver.ts
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-return */
 import Decimal from 'decimal.js-light'
 import { Resolver, Query, Authorized, FieldResolver } from 'type-graphql'
 import { getConnection } from '@dbTools/typeorm'
@@ -15,7 +17,7 @@ import { calculateDecay } from '@/util/decay'
 export class StatisticsResolver {
   @Authorized([RIGHTS.COMMUNITY_STATISTICS])
   @Query(() => CommunityStatistics)
-  async communityStatistics(): Promise<CommunityStatistics> {
+  communityStatistics(): CommunityStatistics {
     return new CommunityStatistics()
   }
 
diff --git a/backend/src/graphql/resolver/TransactionLinkResolver.test.ts b/backend/src/graphql/resolver/TransactionLinkResolver.test.ts
index 60b4551be..14c5b350b 100644
--- a/backend/src/graphql/resolver/TransactionLinkResolver.test.ts
+++ b/backend/src/graphql/resolver/TransactionLinkResolver.test.ts
@@ -1,3 +1,8 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
+/* eslint-disable @typescript-eslint/unbound-method */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
@@ -17,10 +22,12 @@ import {
   createContribution,
   updateContribution,
   createTransactionLink,
+  confirmContribution,
 } from '@/seeds/graphql/mutations'
 import { listTransactionLinksAdmin } from '@/seeds/graphql/queries'
 import { ContributionLink as DbContributionLink } from '@entity/ContributionLink'
 import { User } from '@entity/User'
+import { Transaction } from '@entity/Transaction'
 import { UnconfirmedContribution } from '@model/UnconfirmedContribution'
 import Decimal from 'decimal.js-light'
 import { GraphQLError } from 'graphql'
@@ -137,6 +144,8 @@ describe('TransactionLinkResolver', () => {
       resetToken()
     })
 
+    let contributionId: number
+
     describe('unauthenticated', () => {
       it('throws an error', async () => {
         jest.clearAllMocks()
@@ -210,7 +219,7 @@ describe('TransactionLinkResolver', () => {
               mutate({
                 mutation: redeemTransactionLink,
                 variables: {
-                  code: 'CL-' + contributionLink.code,
+                  code: `CL-${contributionLink.code}`,
                 },
               }),
             ).resolves.toMatchObject({
@@ -249,7 +258,7 @@ describe('TransactionLinkResolver', () => {
               mutate({
                 mutation: redeemTransactionLink,
                 variables: {
-                  code: 'CL-' + contributionLink.code,
+                  code: `CL-${contributionLink.code}`,
                 },
               }),
             ).resolves.toMatchObject({
@@ -288,7 +297,7 @@ describe('TransactionLinkResolver', () => {
               mutate({
                 mutation: redeemTransactionLink,
                 variables: {
-                  code: 'CL-' + contributionLink.code,
+                  code: `CL-${contributionLink.code}`,
                 },
               }),
             ).resolves.toMatchObject({
@@ -306,7 +315,6 @@ describe('TransactionLinkResolver', () => {
           })
         })
 
-        // TODO: have this test separated into a transactionLink and a contributionLink part
         describe('redeem daily Contribution Link', () => {
           const now = new Date()
           let contributionLink: DbContributionLink | undefined
@@ -332,6 +340,10 @@ describe('TransactionLinkResolver', () => {
             })
           })
 
+          afterAll(async () => {
+            await resetEntity(Transaction)
+          })
+
           it('has a daily contribution link in the database', async () => {
             const cls = await DbContributionLink.find()
             expect(cls).toHaveLength(1)
@@ -373,6 +385,7 @@ describe('TransactionLinkResolver', () => {
                 },
               })
               contribution = result.data.createContribution
+              contributionId = result.data.createContribution.id
             })
 
             it('does not allow the user to redeem the contribution link', async () => {
@@ -508,6 +521,92 @@ describe('TransactionLinkResolver', () => {
           })
         })
       })
+
+      describe('transaction link', () => {
+        beforeEach(() => {
+          jest.clearAllMocks()
+        })
+
+        describe('link does not exits', () => {
+          beforeAll(async () => {
+            await mutate({
+              mutation: login,
+              variables: { email: 'bibi@bloxberg.de', password: 'Aa12345_' },
+            })
+          })
+
+          it('throws and logs the error', async () => {
+            await expect(
+              mutate({
+                mutation: redeemTransactionLink,
+                variables: {
+                  code: 'not-valid',
+                },
+              }),
+            ).resolves.toMatchObject({
+              errors: [new GraphQLError('Transaction link not found')],
+            })
+            expect(logger.error).toBeCalledWith('Transaction link not found', 'not-valid')
+          })
+        })
+
+        describe('link exists', () => {
+          let myCode: string
+
+          beforeAll(async () => {
+            await mutate({
+              mutation: login,
+              variables: { email: 'peter@lustig.de', password: 'Aa12345_' },
+            })
+            await mutate({
+              mutation: confirmContribution,
+              variables: { id: contributionId },
+            })
+            await mutate({
+              mutation: login,
+              variables: { email: 'bibi@bloxberg.de', password: 'Aa12345_' },
+            })
+            const {
+              data: {
+                createTransactionLink: { code },
+              },
+            } = await mutate({
+              mutation: createTransactionLink,
+              variables: {
+                amount: 200,
+                memo: 'This is a transaction link from bibi',
+              },
+            })
+            myCode = code
+          })
+
+          describe('own link', () => {
+            beforeAll(async () => {
+              await mutate({
+                mutation: login,
+                variables: { email: 'bibi@bloxberg.de', password: 'Aa12345_' },
+              })
+            })
+
+            it('throws and logs an error', async () => {
+              await expect(
+                mutate({
+                  mutation: redeemTransactionLink,
+                  variables: {
+                    code: myCode,
+                  },
+                }),
+              ).resolves.toMatchObject({
+                errors: [new GraphQLError('Cannot redeem own transaction link')],
+              })
+              expect(logger.error).toBeCalledWith(
+                'Cannot redeem own transaction link',
+                expect.any(Number),
+              )
+            })
+          })
+        })
+      })
     })
   })
 
diff --git a/backend/src/graphql/resolver/TransactionLinkResolver.ts b/backend/src/graphql/resolver/TransactionLinkResolver.ts
index ab5b52bad..9e365ab51 100644
--- a/backend/src/graphql/resolver/TransactionLinkResolver.ts
+++ b/backend/src/graphql/resolver/TransactionLinkResolver.ts
@@ -285,12 +285,20 @@ export class TransactionLinkResolver {
       return true
     } else {
       const now = new Date()
-      const transactionLink = await DbTransactionLink.findOneOrFail({ code })
-      const linkedUser = await DbUser.findOneOrFail(
+      const transactionLink = await DbTransactionLink.findOne({ code })
+      if (!transactionLink) {
+        throw new LogError('Transaction link not found', code)
+      }
+
+      const linkedUser = await DbUser.findOne(
         { id: transactionLink.userId },
         { relations: ['emailContact'] },
       )
 
+      if (!linkedUser) {
+        throw new LogError('Linked user not found for given link', transactionLink.userId)
+      }
+
       if (user.id === linkedUser.id) {
         throw new LogError('Cannot redeem own transaction link', user.id)
       }
@@ -341,8 +349,9 @@ export class TransactionLinkResolver {
   async listTransactionLinksAdmin(
     @Args()
     paginated: Paginated,
+    // eslint-disable-next-line type-graphql/wrong-decorator-signature
     @Arg('filters', () => TransactionLinkFilters, { nullable: true })
-    filters: TransactionLinkFilters | null,
+    filters: TransactionLinkFilters | null, // eslint-disable-line type-graphql/invalid-nullable-input-type
     @Arg('userId', () => Int)
     userId: number,
   ): Promise<TransactionLinkResult> {
diff --git a/backend/src/graphql/resolver/TransactionResolver.test.ts b/backend/src/graphql/resolver/TransactionResolver.test.ts
index 6751aa6ad..c660a72da 100644
--- a/backend/src/graphql/resolver/TransactionResolver.test.ts
+++ b/backend/src/graphql/resolver/TransactionResolver.test.ts
@@ -1,3 +1,7 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/unbound-method */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
@@ -324,7 +328,7 @@ describe('send coins', () => {
         ).toEqual(
           expect.objectContaining({
             data: {
-              sendCoins: 'true',
+              sendCoins: true,
             },
           }),
         )
@@ -337,7 +341,7 @@ describe('send coins', () => {
           memo: 'unrepeatable memo',
         })
 
-        expect(EventProtocol.find()).resolves.toContainEqual(
+        await expect(EventProtocol.find()).resolves.toContainEqual(
           expect.objectContaining({
             type: EventProtocolType.TRANSACTION_SEND,
             userId: user[1].id,
@@ -354,7 +358,7 @@ describe('send coins', () => {
           memo: 'unrepeatable memo',
         })
 
-        expect(EventProtocol.find()).resolves.toContainEqual(
+        await expect(EventProtocol.find()).resolves.toContainEqual(
           expect.objectContaining({
             type: EventProtocolType.TRANSACTION_RECEIVE,
             userId: user[0].id,
@@ -379,7 +383,7 @@ describe('send coins', () => {
         ).resolves.toEqual(
           expect.objectContaining({
             data: {
-              sendCoins: 'true',
+              sendCoins: true,
             },
           }),
         )
@@ -395,7 +399,7 @@ describe('send coins', () => {
         ).resolves.toEqual(
           expect.objectContaining({
             data: {
-              sendCoins: 'true',
+              sendCoins: true,
             },
           }),
         )
@@ -411,7 +415,7 @@ describe('send coins', () => {
         ).resolves.toEqual(
           expect.objectContaining({
             data: {
-              sendCoins: 'true',
+              sendCoins: true,
             },
           }),
         )
@@ -427,7 +431,7 @@ describe('send coins', () => {
         ).resolves.toEqual(
           expect.objectContaining({
             data: {
-              sendCoins: 'true',
+              sendCoins: true,
             },
           }),
         )
diff --git a/backend/src/graphql/resolver/TransactionResolver.ts b/backend/src/graphql/resolver/TransactionResolver.ts
index 9d5a1d38c..a11c5b377 100644
--- a/backend/src/graphql/resolver/TransactionResolver.ts
+++ b/backend/src/graphql/resolver/TransactionResolver.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
 /* eslint-disable new-cap */
 /* eslint-disable @typescript-eslint/no-non-null-assertion */
 
@@ -304,7 +305,7 @@ export class TransactionResolver {
   }
 
   @Authorized([RIGHTS.SEND_COINS])
-  @Mutation(() => String)
+  @Mutation(() => Boolean)
   async sendCoins(
     @Args() { email, amount, memo }: TransactionSendArgs,
     @Ctx() context: Context,
diff --git a/backend/src/graphql/resolver/UserResolver.test.ts b/backend/src/graphql/resolver/UserResolver.test.ts
index 19eb04b34..a57346583 100644
--- a/backend/src/graphql/resolver/UserResolver.test.ts
+++ b/backend/src/graphql/resolver/UserResolver.test.ts
@@ -1,3 +1,8 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/unbound-method */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
@@ -182,7 +187,7 @@ describe('UserResolver', () => {
           { email: 'peter@lustig.de' },
           { relations: ['user'] },
         )
-        expect(EventProtocol.find()).resolves.toContainEqual(
+        await expect(EventProtocol.find()).resolves.toContainEqual(
           expect.objectContaining({
             type: EventProtocolType.REGISTER,
             userId: userConatct.user.id,
@@ -210,8 +215,8 @@ describe('UserResolver', () => {
         })
       })
 
-      it('stores the SEND_CONFIRMATION_EMAIL event in the database', () => {
-        expect(EventProtocol.find()).resolves.toContainEqual(
+      it('stores the SEND_CONFIRMATION_EMAIL event in the database', async () => {
+        await expect(EventProtocol.find()).resolves.toContainEqual(
           expect.objectContaining({
             type: EventProtocolType.SEND_CONFIRMATION_EMAIL,
             userId: user[0].id,
@@ -226,7 +231,7 @@ describe('UserResolver', () => {
         mutation = await mutate({ mutation: createUser, variables })
       })
 
-      it('logs an info', async () => {
+      it('logs an info', () => {
         expect(logger.info).toBeCalledWith('User already exists with this email=peter@lustig.de')
       })
 
@@ -239,7 +244,7 @@ describe('UserResolver', () => {
         })
       })
 
-      it('results with partly faked user with random "id"', async () => {
+      it('results with partly faked user with random "id"', () => {
         expect(mutation).toEqual(
           expect.objectContaining({
             data: {
@@ -256,7 +261,7 @@ describe('UserResolver', () => {
           { email: 'peter@lustig.de' },
           { relations: ['user'] },
         )
-        expect(EventProtocol.find()).resolves.toContainEqual(
+        await expect(EventProtocol.find()).resolves.toContainEqual(
           expect.objectContaining({
             type: EventProtocolType.SEND_ACCOUNT_MULTIREGISTRATION_EMAIL,
             userId: userConatct.user.id,
@@ -283,7 +288,7 @@ describe('UserResolver', () => {
     })
 
     describe('no publisher id', () => {
-      it('sets publisher id to null', async () => {
+      it('sets publisher id to 0', async () => {
         await mutate({
           mutation: createUser,
           variables: { ...variables, email: 'raeuber@hotzenplotz.de', publisherId: undefined },
@@ -294,7 +299,7 @@ describe('UserResolver', () => {
               emailContact: expect.objectContaining({
                 email: 'raeuber@hotzenplotz.de',
               }),
-              publisherId: null,
+              publisherId: 0,
             }),
           ]),
         )
@@ -355,8 +360,8 @@ describe('UserResolver', () => {
           )
         })
 
-        it('stores the ACTIVATE_ACCOUNT event in the database', () => {
-          expect(EventProtocol.find()).resolves.toContainEqual(
+        it('stores the ACTIVATE_ACCOUNT event in the database', async () => {
+          await expect(EventProtocol.find()).resolves.toContainEqual(
             expect.objectContaining({
               type: EventProtocolType.ACTIVATE_ACCOUNT,
               userId: user[0].id,
@@ -364,8 +369,8 @@ describe('UserResolver', () => {
           )
         })
 
-        it('stores the REDEEM_REGISTER event in the database', () => {
-          expect(EventProtocol.find()).resolves.toContainEqual(
+        it('stores the REDEEM_REGISTER event in the database', async () => {
+          await expect(EventProtocol.find()).resolves.toContainEqual(
             expect.objectContaining({
               type: EventProtocolType.REDEEM_REGISTER,
               userId: result.data.createUser.id,
@@ -680,7 +685,7 @@ describe('UserResolver', () => {
           { email: 'bibi@bloxberg.de' },
           { relations: ['user'] },
         )
-        expect(EventProtocol.find()).resolves.toContainEqual(
+        await expect(EventProtocol.find()).resolves.toContainEqual(
           expect.objectContaining({
             type: EventProtocolType.LOGIN,
             userId: userConatct.user.id,
@@ -849,7 +854,7 @@ describe('UserResolver', () => {
       it('returns true', async () => {
         await expect(mutate({ mutation: logout })).resolves.toEqual(
           expect.objectContaining({
-            data: { logout: 'true' },
+            data: { logout: true },
             errors: undefined,
           }),
         )
@@ -927,8 +932,8 @@ describe('UserResolver', () => {
           )
         })
 
-        it('stores the LOGIN event in the database', () => {
-          expect(EventProtocol.find()).resolves.toContainEqual(
+        it('stores the LOGIN event in the database', async () => {
+          await expect(EventProtocol.find()).resolves.toContainEqual(
             expect.objectContaining({
               type: EventProtocolType.LOGIN,
               userId: user[0].id,
@@ -1847,7 +1852,7 @@ describe('UserResolver', () => {
               { email: 'bibi@bloxberg.de' },
               { relations: ['user'] },
             )
-            expect(EventProtocol.find()).resolves.toContainEqual(
+            await expect(EventProtocol.find()).resolves.toContainEqual(
               expect.objectContaining({
                 type: EventProtocolType.ADMIN_SEND_CONFIRMATION_EMAIL,
                 userId: userConatct.user.id,
diff --git a/backend/src/graphql/resolver/UserResolver.ts b/backend/src/graphql/resolver/UserResolver.ts
index f9617b0df..078a29a8e 100644
--- a/backend/src/graphql/resolver/UserResolver.ts
+++ b/backend/src/graphql/resolver/UserResolver.ts
@@ -1,3 +1,7 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
 import i18n from 'i18n'
 import { v4 as uuidv4 } from 'uuid'
 import {
@@ -166,11 +170,11 @@ export class UserResolver {
 
     // Elopage Status & Stored PublisherId
     user.hasElopage = await this.hasElopage({ ...context, user: dbUser })
-    logger.info('user.hasElopage=' + user.hasElopage)
+    logger.info('user.hasElopage', user.hasElopage)
     if (!user.hasElopage && publisherId) {
       user.publisherId = publisherId
       dbUser.publisherId = publisherId
-      DbUser.save(dbUser)
+      await DbUser.save(dbUser)
     }
 
     context.setHeaders.push({
@@ -184,8 +188,8 @@ export class UserResolver {
   }
 
   @Authorized([RIGHTS.LOGOUT])
-  @Mutation(() => String)
-  async logout(): Promise<boolean> {
+  @Mutation(() => Boolean)
+  logout(): boolean {
     // TODO: Event still missing here!!
     // TODO: We dont need this anymore, but might need this in the future in oder to invalidate a valid JWT-Token.
     // Furthermore this hook can be useful for tracking user behaviour (did he logout or not? Warn him if he didn't on next login)
@@ -202,7 +206,7 @@ export class UserResolver {
   @Mutation(() => User)
   async createUser(
     @Args()
-    { email, firstName, lastName, language, publisherId, redeemCode = null }: CreateUserArgs,
+    { email, firstName, lastName, language, publisherId = null, redeemCode = null }: CreateUserArgs,
   ): Promise<User> {
     logger.addContext('user', 'unknown')
     logger.info(
@@ -239,7 +243,7 @@ export class UserResolver {
         user.lastName = lastName
         user.language = language
         user.publisherId = publisherId
-        logger.debug('partly faked user=' + user)
+        logger.debug('partly faked user', user)
 
         const emailSent = await sendAccountMultiRegistrationEmail({
           firstName: foundUser.firstName, // this is the real name of the email owner, but just "firstName" would be the name of the new registrant which shall not be passed to the outside
@@ -272,22 +276,22 @@ export class UserResolver {
     dbUser.firstName = firstName
     dbUser.lastName = lastName
     dbUser.language = language
-    dbUser.publisherId = publisherId
+    dbUser.publisherId = publisherId || 0
     dbUser.passwordEncryptionType = PasswordEncryptionType.NO_PASSWORD
-    logger.debug('new dbUser=' + dbUser)
+    logger.debug('new dbUser', dbUser)
     if (redeemCode) {
       if (redeemCode.match(/^CL-/)) {
         const contributionLink = await DbContributionLink.findOne({
           code: redeemCode.replace('CL-', ''),
         })
-        logger.info('redeemCode found contributionLink=' + contributionLink)
+        logger.info('redeemCode found contributionLink', contributionLink)
         if (contributionLink) {
           dbUser.contributionLinkId = contributionLink.id
           eventRegisterRedeem.contributionId = contributionLink.id
         }
       } else {
         const transactionLink = await DbTransactionLink.findOne({ code: redeemCode })
-        logger.info('redeemCode found transactionLink=' + transactionLink)
+        logger.info('redeemCode found transactionLink', transactionLink)
         if (transactionLink) {
           dbUser.referrerId = transactionLink.userId
           eventRegisterRedeem.transactionId = transactionLink.id
@@ -654,7 +658,7 @@ export class UserResolver {
         return 'user.' + fieldName
       }),
       searchText,
-      filters,
+      filters || null,
       currentPage,
       pageSize,
     )
diff --git a/backend/src/graphql/resolver/semaphore.test.ts b/backend/src/graphql/resolver/semaphore.test.ts
index e334910f1..b3c99ba7d 100644
--- a/backend/src/graphql/resolver/semaphore.test.ts
+++ b/backend/src/graphql/resolver/semaphore.test.ts
@@ -1,3 +1,7 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 
 import Decimal from 'decimal.js-light'
@@ -79,7 +83,7 @@ describe('semaphore', () => {
         maxPerCycle: 1,
       },
     })
-    contributionLinkCode = 'CL-' + contributionLink.code
+    contributionLinkCode = `CL-${contributionLink.code}`
     await mutate({
       mutation: login,
       variables: { email: 'bob@baumeister.de', password: 'Aa12345_' },
@@ -187,4 +191,50 @@ describe('semaphore', () => {
     await expect(confirmBibisContribution).resolves.toMatchObject({ errors: undefined })
     await expect(confirmBobsContribution).resolves.toMatchObject({ errors: undefined })
   })
+
+  describe('redeem transaction link twice', () => {
+    let myCode: string
+
+    beforeAll(async () => {
+      await mutate({
+        mutation: login,
+        variables: { email: 'bibi@bloxberg.de', password: 'Aa12345_' },
+      })
+      const {
+        data: { createTransactionLink: bibisLink },
+      } = await mutate({
+        mutation: createTransactionLink,
+        variables: {
+          amount: 20,
+          memo: 'Bibis Link',
+        },
+      })
+      myCode = bibisLink.code
+      await mutate({
+        mutation: login,
+        variables: { email: 'bob@baumeister.de', password: 'Aa12345_' },
+      })
+    })
+
+    it('does not throw, but should', async () => {
+      const redeem1 = mutate({
+        mutation: redeemTransactionLink,
+        variables: {
+          code: myCode,
+        },
+      })
+      const redeem2 = mutate({
+        mutation: redeemTransactionLink,
+        variables: {
+          code: myCode,
+        },
+      })
+      await expect(redeem1).resolves.toMatchObject({
+        errors: undefined,
+      })
+      await expect(redeem2).resolves.toMatchObject({
+        errors: undefined,
+      })
+    })
+  })
 })
diff --git a/backend/src/graphql/resolver/util/creations.test.ts b/backend/src/graphql/resolver/util/creations.test.ts
index 4d8132333..4eabec500 100644
--- a/backend/src/graphql/resolver/util/creations.test.ts
+++ b/backend/src/graphql/resolver/util/creations.test.ts
@@ -1,3 +1,6 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
diff --git a/backend/src/graphql/resolver/util/creations.ts b/backend/src/graphql/resolver/util/creations.ts
index b9ba2e69f..a45703ed2 100644
--- a/backend/src/graphql/resolver/util/creations.ts
+++ b/backend/src/graphql/resolver/util/creations.ts
@@ -1,9 +1,12 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 import LogError from '@/server/LogError'
 import { backendLogger as logger } from '@/server/logger'
 import { getConnection } from '@dbTools/typeorm'
 import { Contribution } from '@entity/Contribution'
 import Decimal from 'decimal.js-light'
 import { FULL_CREATION_AVAILABLE, MAX_CREATION_AMOUNT } from '../const/const'
+import { OpenCreation } from '@model/OpenCreation'
 
 interface CreationMap {
   id: number
@@ -100,7 +103,7 @@ const getCreationMonths = (timezoneOffset: number): number[] => {
   return getCreationDates(timezoneOffset).map((date) => date.getMonth() + 1)
 }
 
-export const getCreationDates = (timezoneOffset: number): Date[] => {
+const getCreationDates = (timezoneOffset: number): Date[] => {
   const clientNow = new Date()
   clientNow.setTime(clientNow.getTime() - timezoneOffset * 60 * 1000)
   logger.info(
@@ -152,3 +155,18 @@ export const updateCreations = (
 export const isValidDateString = (dateString: string): boolean => {
   return new Date(dateString).toString() !== 'Invalid Date'
 }
+
+export const getOpenCreations = async (
+  userId: number,
+  timezoneOffset: number,
+): Promise<OpenCreation[]> => {
+  const creations = await getUserCreation(userId, timezoneOffset)
+  const creationDates = getCreationDates(timezoneOffset)
+  return creationDates.map((date, index) => {
+    return {
+      month: date.getMonth(),
+      year: date.getFullYear(),
+      amount: creations[index],
+    }
+  })
+}
diff --git a/backend/src/graphql/resolver/util/findContributions.ts b/backend/src/graphql/resolver/util/findContributions.ts
index 5201284aa..8957a29d8 100644
--- a/backend/src/graphql/resolver/util/findContributions.ts
+++ b/backend/src/graphql/resolver/util/findContributions.ts
@@ -10,7 +10,7 @@ export const findContributions = async (
   withDeleted: boolean,
   relations: string[],
   userId?: number,
-  statusFilter?: ContributionStatus[],
+  statusFilter?: ContributionStatus[] | null,
 ): Promise<[DbContribution[], number]> =>
   DbContribution.findAndCount({
     where: {
diff --git a/backend/src/index.ts b/backend/src/index.ts
index 10b7c91ac..cd6d002cc 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -17,7 +17,7 @@ async function main() {
       console.log(`GraphIQL available at http://localhost:${CONFIG.PORT}`)
     }
   })
-  startValidateCommunities(Number(CONFIG.FEDERATION_VALIDATE_COMMUNITY_TIMER))
+  void startValidateCommunities(Number(CONFIG.FEDERATION_VALIDATE_COMMUNITY_TIMER))
 }
 
 main().catch((e) => {
diff --git a/backend/src/middleware/klicktippMiddleware.ts b/backend/src/middleware/klicktippMiddleware.ts
index 6bdaa63fd..0469b4ccc 100644
--- a/backend/src/middleware/klicktippMiddleware.ts
+++ b/backend/src/middleware/klicktippMiddleware.ts
@@ -1,3 +1,7 @@
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
 import { MiddlewareFn } from 'type-graphql'
 import { /* klicktippSignIn, */ getKlickTippUser } from '@/apis/KlicktippController'
 import { KlickTipp } from '@model/KlickTipp'
diff --git a/backend/src/password/EncryptorUtils.ts b/backend/src/password/EncryptorUtils.ts
index d03f5d169..4c802a86f 100644
--- a/backend/src/password/EncryptorUtils.ts
+++ b/backend/src/password/EncryptorUtils.ts
@@ -1,3 +1,6 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 import CONFIG from '@/config'
 import LogError from '@/server/LogError'
 import { backendLogger as logger } from '@/server/logger'
diff --git a/backend/src/seeds/factory/contributionLink.ts b/backend/src/seeds/factory/contributionLink.ts
index 08f784604..5925cdcfe 100644
--- a/backend/src/seeds/factory/contributionLink.ts
+++ b/backend/src/seeds/factory/contributionLink.ts
@@ -1,3 +1,6 @@
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/unbound-method */
 import { ApolloServerTestClient } from 'apollo-server-testing'
 import { login, createContributionLink } from '@/seeds/graphql/mutations'
 import { ContributionLink } from '@model/ContributionLink'
diff --git a/backend/src/seeds/factory/creation.ts b/backend/src/seeds/factory/creation.ts
index 69d77aa03..db58c9d51 100644
--- a/backend/src/seeds/factory/creation.ts
+++ b/backend/src/seeds/factory/creation.ts
@@ -1,3 +1,7 @@
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/unbound-method */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
diff --git a/backend/src/seeds/factory/transactionLink.ts b/backend/src/seeds/factory/transactionLink.ts
index be5a01d22..797a93183 100644
--- a/backend/src/seeds/factory/transactionLink.ts
+++ b/backend/src/seeds/factory/transactionLink.ts
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/unbound-method */
 import { ApolloServerTestClient } from 'apollo-server-testing'
 import { login, createTransactionLink } from '@/seeds/graphql/mutations'
 import { TransactionLinkInterface } from '@/seeds/transactionLink/TransactionLinkInterface'
diff --git a/backend/src/seeds/factory/user.ts b/backend/src/seeds/factory/user.ts
index d566275db..854e5a4ed 100644
--- a/backend/src/seeds/factory/user.ts
+++ b/backend/src/seeds/factory/user.ts
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/unbound-method */
 import { createUser, setPassword } from '@/seeds/graphql/mutations'
 import { User } from '@entity/User'
 import { UserInterface } from '@/seeds/users/UserInterface'
diff --git a/backend/src/seeds/graphql/mutations.ts b/backend/src/seeds/graphql/mutations.ts
index 79684d378..1aa12a32f 100644
--- a/backend/src/seeds/graphql/mutations.ts
+++ b/backend/src/seeds/graphql/mutations.ts
@@ -89,6 +89,12 @@ export const createTransactionLink = gql`
   }
 `
 
+export const deleteTransactionLink = gql`
+  mutation ($id: Int!) {
+    deleteTransactionLink(id: $id)
+  }
+`
+
 // from admin interface
 
 export const adminCreateContribution = gql`
@@ -269,7 +275,7 @@ export const denyContribution = gql`
 `
 
 export const createContributionMessage = gql`
-  mutation ($contributionId: Float!, $message: String!) {
+  mutation ($contributionId: Int!, $message: String!) {
     createContributionMessage(contributionId: $contributionId, message: $message) {
       id
       message
@@ -283,7 +289,7 @@ export const createContributionMessage = gql`
 `
 
 export const adminCreateContributionMessage = gql`
-  mutation ($contributionId: Float!, $message: String!) {
+  mutation ($contributionId: Int!, $message: String!) {
     adminCreateContributionMessage(contributionId: $contributionId, message: $message) {
       id
       message
diff --git a/backend/src/seeds/graphql/queries.ts b/backend/src/seeds/graphql/queries.ts
index 6e2e58c67..299a0103d 100644
--- a/backend/src/seeds/graphql/queries.ts
+++ b/backend/src/seeds/graphql/queries.ts
@@ -301,7 +301,7 @@ export const searchAdminUsers = gql`
 `
 
 export const listContributionMessages = gql`
-  query ($contributionId: Float!, $pageSize: Int = 25, $currentPage: Int = 1, $order: Order = ASC) {
+  query ($contributionId: Int!, $pageSize: Int = 25, $currentPage: Int = 1, $order: Order = ASC) {
     listContributionMessages(
       contributionId: $contributionId
       pageSize: $pageSize
diff --git a/backend/src/seeds/index.ts b/backend/src/seeds/index.ts
index 9e1939db8..55cd65ec1 100644
--- a/backend/src/seeds/index.ts
+++ b/backend/src/seeds/index.ts
@@ -1,3 +1,7 @@
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-call */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
@@ -94,4 +98,4 @@ const run = async () => {
   await con.close()
 }
 
-run()
+void run()
diff --git a/backend/src/server/LogError.test.ts b/backend/src/server/LogError.test.ts
index 6654c42f3..5aa1cae21 100644
--- a/backend/src/server/LogError.test.ts
+++ b/backend/src/server/LogError.test.ts
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/unbound-method */
 import { logger } from '@test/testSetup'
 
 import LogError from './LogError'
diff --git a/backend/src/server/createServer.ts b/backend/src/server/createServer.ts
index 390ff1c6b..0c5009b6f 100644
--- a/backend/src/server/createServer.ts
+++ b/backend/src/server/createServer.ts
@@ -1,3 +1,6 @@
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
+/* eslint-disable @typescript-eslint/unbound-method */
 import 'reflect-metadata'
 
 import { ApolloServer } from 'apollo-server-express'
@@ -71,6 +74,7 @@ const createServer = async (
   app.use(localization.init)
 
   // Elopage Webhook
+  // eslint-disable-next-line @typescript-eslint/no-misused-promises
   app.post('/hook/elopage/' + CONFIG.WEBHOOK_ELOPAGE_SECRET, elopageWebhook)
 
   // Apollo Server
diff --git a/backend/src/server/logger.ts b/backend/src/server/logger.ts
index 0cfa5689b..5cfa94285 100644
--- a/backend/src/server/logger.ts
+++ b/backend/src/server/logger.ts
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 import log4js from 'log4js'
 import CONFIG from '@/config'
 
diff --git a/backend/src/server/plugins.ts b/backend/src/server/plugins.ts
index 7ecbedf2a..bc2495b71 100644
--- a/backend/src/server/plugins.ts
+++ b/backend/src/server/plugins.ts
@@ -1,3 +1,8 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
+/* eslint-disable @typescript-eslint/no-unsafe-return */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
diff --git a/backend/src/typeorm/repository/TransactionLink.ts b/backend/src/typeorm/repository/TransactionLink.ts
index 46926673a..7df1fd465 100644
--- a/backend/src/typeorm/repository/TransactionLink.ts
+++ b/backend/src/typeorm/repository/TransactionLink.ts
@@ -1,3 +1,4 @@
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
 import { Repository, EntityRepository } from '@dbTools/typeorm'
 import { TransactionLink as dbTransactionLink } from '@entity/TransactionLink'
 import Decimal from 'decimal.js-light'
diff --git a/backend/src/typeorm/repository/User.ts b/backend/src/typeorm/repository/User.ts
index 4972aa9c4..e72a6e717 100644
--- a/backend/src/typeorm/repository/User.ts
+++ b/backend/src/typeorm/repository/User.ts
@@ -7,7 +7,7 @@ export class UserRepository extends Repository<DbUser> {
   async findBySearchCriteriaPagedFiltered(
     select: string[],
     searchCriteria: string,
-    filters: SearchUsersFilters,
+    filters: SearchUsersFilters | null,
     currentPage: number,
     pageSize: number,
   ): Promise<[DbUser[], number]> {
diff --git a/backend/src/util/decay.test.ts b/backend/src/util/decay.test.ts
index f1111fab4..cf00ec851 100644
--- a/backend/src/util/decay.test.ts
+++ b/backend/src/util/decay.test.ts
@@ -10,13 +10,13 @@ describe('utils/decay', () => {
       // TODO: toString() was required, we could not compare two decimals
       expect(decayFormula(amount, seconds).toString()).toBe('0.999999978035040489732012')
     })
-    it('has correct backward calculation', async () => {
+    it('has correct backward calculation', () => {
       const amount = new Decimal(1.0)
       const seconds = -1
       expect(decayFormula(amount, seconds).toString()).toBe('1.000000021964959992727444')
     })
     // we get pretty close, but not exact here, skipping
-    it.skip('has correct forward calculation', async () => {
+    it.skip('has correct forward calculation', () => {
       const amount = new Decimal(1.0).div(
         new Decimal('0.99999997803504048973201202316767079413460520837376'),
       )
@@ -24,7 +24,7 @@ describe('utils/decay', () => {
       expect(decayFormula(amount, seconds).toString()).toBe('1.0')
     })
   })
-  it('has base 0.99999997802044727', async () => {
+  it('has base 0.99999997802044727', () => {
     const now = new Date()
     now.setSeconds(1)
     const oneSecondAgo = new Date(now.getTime())
@@ -34,7 +34,7 @@ describe('utils/decay', () => {
     )
   })
 
-  it('returns input amount when from and to is the same', async () => {
+  it('returns input amount when from and to is the same', () => {
     const now = new Date()
     expect(calculateDecay(new Decimal(100.0), now, now).balance.toString()).toBe('100')
   })
diff --git a/backend/src/util/klicktipp.ts b/backend/src/util/klicktipp.ts
index 02bdd853b..baa7970fc 100644
--- a/backend/src/util/klicktipp.ts
+++ b/backend/src/util/klicktipp.ts
@@ -26,4 +26,4 @@ export async function retrieveNotRegisteredEmails(): Promise<string[]> {
   return notRegisteredUser
 }
 
-retrieveNotRegisteredEmails()
+void retrieveNotRegisteredEmails()
diff --git a/backend/src/webhook/elopage.ts b/backend/src/webhook/elopage.ts
index 87af4088c..587bb788c 100644
--- a/backend/src/webhook/elopage.ts
+++ b/backend/src/webhook/elopage.ts
@@ -1,3 +1,7 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 /*
diff --git a/backend/test/extensions.ts b/backend/test/extensions.ts
index 69c2ff7a6..26fb11510 100644
--- a/backend/test/extensions.ts
+++ b/backend/test/extensions.ts
@@ -1,3 +1,6 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/restrict-template-expressions */
 /* eslint-disable @typescript-eslint/no-empty-interface */
 
 import Decimal from 'decimal.js-light'
diff --git a/backend/test/helpers.ts b/backend/test/helpers.ts
index 1935b01a0..a5f721717 100644
--- a/backend/test/helpers.ts
+++ b/backend/test/helpers.ts
@@ -1,3 +1,8 @@
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+/* eslint-disable @typescript-eslint/unbound-method */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 
diff --git a/backend/test/testSetup.ts b/backend/test/testSetup.ts
index 300a9cbf3..b13e3cf26 100644
--- a/backend/test/testSetup.ts
+++ b/backend/test/testSetup.ts
@@ -1,3 +1,5 @@
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+/* eslint-disable @typescript-eslint/no-unsafe-return */
 import CONFIG from '@/config'
 import { backendLogger as logger } from '@/server/logger'
 import { i18n } from '@/server/localization'
diff --git a/backend/yarn.lock b/backend/yarn.lock
index fe50e680c..3151557ab 100644
--- a/backend/yarn.lock
+++ b/backend/yarn.lock
@@ -1014,6 +1014,11 @@
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.9.tgz#97edc9037ea0c38585320b28964dde3b39e4660d"
   integrity sha512-qcUXuemtEu+E5wZSJHNxUXeCZhAfXKQ41D+duX+VYPde7xyEVZci+/oXKJL13tnRs9lR2pr4fod59GT6/X1/yQ==
 
+"@types/json-schema@^7.0.9":
+  version "7.0.11"
+  resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.11.tgz#d421b6c527a3037f7c84433fd2c4229e016863d3"
+  integrity sha512-wOuvG1SN4Us4rez+tylwwwCV1psiNVOkJeM3AUWUNWg/jDQY2+HE/444y5gc+jBmRqASOm2Oeh5c1axHobwRKQ==
+
 "@types/json5@^0.0.29":
   version "0.0.29"
   resolved "https://registry.yarnpkg.com/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
@@ -1123,6 +1128,11 @@
   resolved "https://registry.yarnpkg.com/@types/range-parser/-/range-parser-1.2.4.tgz#cd667bcfdd025213aafb7ca5915a932590acdcdc"
   integrity sha512-EEhsLsD6UsDM1yFhAvy0Cjr6VwmpMWqFBCb9w07wVugF7w9nfajxLuVmngTIpgS6svCnm6Vaw+MZhoDCKnOfsw==
 
+"@types/semver@^7.3.12":
+  version "7.3.13"
+  resolved "https://registry.yarnpkg.com/@types/semver/-/semver-7.3.13.tgz#da4bfd73f49bd541d28920ab0e2bf0ee80f71c91"
+  integrity sha512-21cFJr9z3g5dW8B0CVI9g2O9beqaThGQ6ZFBqHfwhzLDKUxaqTIy3vnfah/UPkfOiF2pLq+tGz+W8RyCskuslw==
+
 "@types/semver@^7.3.3":
   version "7.3.8"
   resolved "https://registry.yarnpkg.com/@types/semver/-/semver-7.3.8.tgz#508a27995498d7586dcecd77c25e289bfaf90c59"
@@ -1196,6 +1206,13 @@
     eslint-scope "^5.1.1"
     eslint-utils "^3.0.0"
 
+"@typescript-eslint/experimental-utils@^5.9.0":
+  version "5.53.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-5.53.0.tgz#e249e3a47ace290ea3d83a5a08c8d90cd7fe2a53"
+  integrity sha512-4SklZEwRn0jqkhtW+pPZpbKFXprwGneBndRM0TGzJu/LWdb9QV2hBgFIVU9AREo02BzqFvyG/ypd+xAW5YGhXw==
+  dependencies:
+    "@typescript-eslint/utils" "5.53.0"
+
 "@typescript-eslint/parser@^4.28.0":
   version "4.33.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-4.33.0.tgz#dfe797570d9694e560528d18eecad86c8c744899"
@@ -1214,11 +1231,24 @@
     "@typescript-eslint/types" "4.33.0"
     "@typescript-eslint/visitor-keys" "4.33.0"
 
+"@typescript-eslint/scope-manager@5.53.0":
+  version "5.53.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-5.53.0.tgz#42b54f280e33c82939275a42649701024f3fafef"
+  integrity sha512-Opy3dqNsp/9kBBeCPhkCNR7fmdSQqA+47r21hr9a14Bx0xnkElEQmhoHga+VoaoQ6uDHjDKmQPIYcUcKJifS7w==
+  dependencies:
+    "@typescript-eslint/types" "5.53.0"
+    "@typescript-eslint/visitor-keys" "5.53.0"
+
 "@typescript-eslint/types@4.33.0":
   version "4.33.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-4.33.0.tgz#a1e59036a3b53ae8430ceebf2a919dc7f9af6d72"
   integrity sha512-zKp7CjQzLQImXEpLt2BUw1tvOMPfNoTAfb8l51evhYbOEEzdWyQNmHWWGPR6hwKJDAi+1VXSBmnhL9kyVTTOuQ==
 
+"@typescript-eslint/types@5.53.0":
+  version "5.53.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-5.53.0.tgz#f79eca62b97e518ee124086a21a24f3be267026f"
+  integrity sha512-5kcDL9ZUIP756K6+QOAfPkigJmCPHcLN7Zjdz76lQWWDdzfOhZDTj1irs6gPBKiXx5/6O3L0+AvupAut3z7D2A==
+
 "@typescript-eslint/typescript-estree@4.33.0":
   version "4.33.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-4.33.0.tgz#0dfb51c2908f68c5c08d82aefeaf166a17c24609"
@@ -1232,6 +1262,33 @@
     semver "^7.3.5"
     tsutils "^3.21.0"
 
+"@typescript-eslint/typescript-estree@5.53.0":
+  version "5.53.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-5.53.0.tgz#bc651dc28cf18ab248ecd18a4c886c744aebd690"
+  integrity sha512-eKmipH7QyScpHSkhbptBBYh9v8FxtngLquq292YTEQ1pxVs39yFBlLC1xeIZcPPz1RWGqb7YgERJRGkjw8ZV7w==
+  dependencies:
+    "@typescript-eslint/types" "5.53.0"
+    "@typescript-eslint/visitor-keys" "5.53.0"
+    debug "^4.3.4"
+    globby "^11.1.0"
+    is-glob "^4.0.3"
+    semver "^7.3.7"
+    tsutils "^3.21.0"
+
+"@typescript-eslint/utils@5.53.0":
+  version "5.53.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/utils/-/utils-5.53.0.tgz#e55eaad9d6fffa120575ffaa530c7e802f13bce8"
+  integrity sha512-VUOOtPv27UNWLxFwQK/8+7kvxVC+hPHNsJjzlJyotlaHjLSIgOCKj9I0DBUjwOOA64qjBwx5afAPjksqOxMO0g==
+  dependencies:
+    "@types/json-schema" "^7.0.9"
+    "@types/semver" "^7.3.12"
+    "@typescript-eslint/scope-manager" "5.53.0"
+    "@typescript-eslint/types" "5.53.0"
+    "@typescript-eslint/typescript-estree" "5.53.0"
+    eslint-scope "^5.1.1"
+    eslint-utils "^3.0.0"
+    semver "^7.3.7"
+
 "@typescript-eslint/visitor-keys@4.33.0":
   version "4.33.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-4.33.0.tgz#2a22f77a41604289b7a186586e9ec48ca92ef1dd"
@@ -1240,6 +1297,14 @@
     "@typescript-eslint/types" "4.33.0"
     eslint-visitor-keys "^2.0.0"
 
+"@typescript-eslint/visitor-keys@5.53.0":
+  version "5.53.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-5.53.0.tgz#8a5126623937cdd909c30d8fa72f79fa56cc1a9f"
+  integrity sha512-JqNLnX3leaHFZEN0gCh81sIvgrp/2GOACZNgO4+Tkf64u51kTpAyWFOY8XHx8XuXr3N2C9zgPPHtcpMg6z1g0w==
+  dependencies:
+    "@typescript-eslint/types" "5.53.0"
+    eslint-visitor-keys "^3.3.0"
+
 "@wry/equality@^0.1.2":
   version "0.1.11"
   resolved "https://registry.yarnpkg.com/@wry/equality/-/equality-0.1.11.tgz#35cb156e4a96695aa81a9ecc4d03787bc17f1790"
@@ -2673,6 +2738,13 @@ eslint-plugin-promise@^5.1.0:
   resolved "https://registry.yarnpkg.com/eslint-plugin-promise/-/eslint-plugin-promise-5.1.0.tgz#fb2188fb734e4557993733b41aa1a688f46c6f24"
   integrity sha512-NGmI6BH5L12pl7ScQHbg7tvtk4wPxxj8yPHH47NvSmMtFneC077PSeY3huFj06ZWZvtbfxSPt3RuOQD5XcR4ng==
 
+eslint-plugin-type-graphql@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-type-graphql/-/eslint-plugin-type-graphql-1.0.0.tgz#d348560ed628d6ca1dfcea35a02891432daafe6b"
+  integrity sha512-l6Yjcylavs88mcRZ3znwRuu8R9a8eoLdSaMGfycaMragf+VMxiz3kwjPmYz8AZxqqp8gvM7/2EGJqkkjM4NKIQ==
+  dependencies:
+    "@typescript-eslint/experimental-utils" "^5.9.0"
+
 eslint-scope@^5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/eslint-scope/-/eslint-scope-5.1.1.tgz#e786e59a66cb92b3f6c1fb0d508aab174848f48c"
@@ -2705,6 +2777,11 @@ eslint-visitor-keys@^2.0.0:
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-2.1.0.tgz#f65328259305927392c938ed44eb0a5c9b2bd303"
   integrity sha512-0rSmRBzXgDzIsD6mGdJgevzgezI534Cer5L/vyMX0kHzT/jiB43jRhd9YUlMGYLQy2zprNmoT8qasCGtY+QaKw==
 
+eslint-visitor-keys@^3.3.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-3.3.0.tgz#f6480fa6b1f30efe2d1968aa8ac745b862469826"
+  integrity sha512-mQ+suqKJVyeuwGYHAdjMFqjCyfl8+Ldnxuyp3ldiMBFKkvytrXUZWaiPCEav8qDHKty44bD+qV1IP4T+w+xXRA==
+
 eslint@^7.29.0:
   version "7.32.0"
   resolved "https://registry.yarnpkg.com/eslint/-/eslint-7.32.0.tgz#c6d328a14be3fb08c8d1d21e12c02fdb7a2a812d"
@@ -2916,6 +2993,17 @@ fast-glob@^3.1.1:
     merge2 "^1.3.0"
     micromatch "^4.0.4"
 
+fast-glob@^3.2.9:
+  version "3.2.12"
+  resolved "https://registry.yarnpkg.com/fast-glob/-/fast-glob-3.2.12.tgz#7f39ec99c2e6ab030337142da9e0c18f37afae80"
+  integrity sha512-DVj4CQIYYow0BlaelwK1pHl5n5cRSJfM60UA0zK891sVInoPri2Ekj7+e1CT3/3qxXenpI+nBBmQAcJPJgaj4w==
+  dependencies:
+    "@nodelib/fs.stat" "^2.0.2"
+    "@nodelib/fs.walk" "^1.2.3"
+    glob-parent "^5.1.2"
+    merge2 "^1.3.0"
+    micromatch "^4.0.4"
+
 fast-json-stable-stringify@2.x, fast-json-stable-stringify@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz#874bf69c6f404c2b5d99c481341399fd55892633"
@@ -3197,6 +3285,18 @@ globby@^11.0.3:
     merge2 "^1.3.0"
     slash "^3.0.0"
 
+globby@^11.1.0:
+  version "11.1.0"
+  resolved "https://registry.yarnpkg.com/globby/-/globby-11.1.0.tgz#bd4be98bb042f83d796f7e3811991fbe82a0d34b"
+  integrity sha512-jhIXaOzy1sb8IyocaruWSn1TjmnBVs8Ayhcy83rmxNJ8q2uWKCAj3CnJY+KpGSXCueAPc0i05kVvVKtP1t9S3g==
+  dependencies:
+    array-union "^2.1.0"
+    dir-glob "^3.0.1"
+    fast-glob "^3.2.9"
+    ignore "^5.2.0"
+    merge2 "^1.4.1"
+    slash "^3.0.0"
+
 got@^9.6.0:
   version "9.6.0"
   resolved "https://registry.yarnpkg.com/got/-/got-9.6.0.tgz#edf45e7d67f99545705de1f7bbeeeb121765ed85"
@@ -3505,6 +3605,11 @@ ignore@^5.1.1, ignore@^5.1.4, ignore@^5.1.8:
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-5.1.8.tgz#f150a8b50a34289b33e22f5889abd4d8016f0e57"
   integrity sha512-BMpfD7PpiETpBl/A6S498BaIJ6Y/ABT93ETbby2fP00v4EbvPBXWEoaR1UBPKs3iR53pJY7EtZk5KACI57i1Uw==
 
+ignore@^5.2.0:
+  version "5.2.4"
+  resolved "https://registry.yarnpkg.com/ignore/-/ignore-5.2.4.tgz#a291c0c6178ff1b960befe47fcdec301674a6324"
+  integrity sha512-MAb38BcSbH0eHNBxn7ql2NH/kX33OkB3lZ1BNdh7ENeRChHTYsTvWrMubiIAMNS2llXEEgZ1MUOBtXChP3kaFQ==
+
 import-fresh@^3.0.0, import-fresh@^3.2.1:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/import-fresh/-/import-fresh-3.3.0.tgz#37162c25fcb9ebaa2e6e53d5b4d88ce17d9e0c2b"
@@ -3668,7 +3773,7 @@ is-generator-fn@^2.0.0:
   resolved "https://registry.yarnpkg.com/is-generator-fn/-/is-generator-fn-2.1.0.tgz#7d140adc389aaf3011a8f2a2a4cfa6faadffb118"
   integrity sha512-cTIB4yPYL/Grw0EaSzASzg6bBy9gqCofvWN8okThAYIxKJZC+udlRAmGbM0XLeniEJSs8uEgHPGuHSe1XsOLSQ==
 
-is-glob@^4.0.0, is-glob@^4.0.1, is-glob@~4.0.1:
+is-glob@^4.0.0, is-glob@^4.0.1, is-glob@^4.0.3, is-glob@~4.0.1:
   version "4.0.3"
   resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-4.0.3.tgz#64f61e42cbbb2eec2071a9dac0b28ba1e65d5084"
   integrity sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg==
@@ -4690,7 +4795,7 @@ merge-stream@^2.0.0:
   resolved "https://registry.yarnpkg.com/merge-stream/-/merge-stream-2.0.0.tgz#52823629a14dd00c9770fb6ad47dc6310f2c1f60"
   integrity sha512-abv/qOcuPfk3URPfDzmZU1LKmuw8kT+0nIHvKrKgFrwifol/doWcdA4ZqsWQ8ENrFKkd67Mfpo/LovbIUsbt3w==
 
-merge2@^1.3.0:
+merge2@^1.3.0, merge2@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/merge2/-/merge2-1.4.1.tgz#4368892f885e907455a6fd7dc55c0c9d404990ae"
   integrity sha512-8q7VEgMJW4J8tcfVPy8g09NcQwZdbwFEqhe/WZkoIzjn/3TGDwtOCYtXGxA3O8tPzpczCCDgv+P2P5y00ZJOOg==
@@ -5760,6 +5865,13 @@ semver@^6.0.0, semver@^6.1.0, semver@^6.2.0, semver@^6.3.0:
   resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
   integrity sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==
 
+semver@^7.3.7:
+  version "7.3.8"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.8.tgz#07a78feafb3f7b32347d725e33de7e2a2df67798"
+  integrity sha512-NB1ctGL5rlHrPJtFDVIVzTyQylMLu9N9VICA6HSFJo8MCGVTMW6gfpicwKmmK/dAjTOrqu5l63JJOpDSrAis3A==
+  dependencies:
+    lru-cache "^6.0.0"
+
 send@0.17.1:
   version "0.17.1"
   resolved "https://registry.yarnpkg.com/send/-/send-0.17.1.tgz#c1d8b059f7900f7466dd4938bdc44e11ddb376c8"
diff --git a/database/package.json b/database/package.json
index 95fd9a791..6dc8acf8c 100644
--- a/database/package.json
+++ b/database/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gradido-database",
-  "version": "1.19.0",
+  "version": "1.19.1",
   "description": "Gradido Database Tool to execute database migrations",
   "main": "src/index.ts",
   "repository": "https://github.com/gradido/gradido/database",
@@ -16,9 +16,7 @@
     "dev_up": "cross-env TZ=UTC ts-node src/index.ts up",
     "dev_down": "cross-env TZ=UTC ts-node src/index.ts down",
     "dev_reset": "cross-env TZ=UTC ts-node src/index.ts reset",
-    "lint": "eslint --max-warnings=0 --ext .js,.ts .",
-    "seed:config": "ts-node ./node_modules/typeorm-seeding/dist/cli.js config",
-    "seed": "cross-env TZ=UTC ts-node src/index.ts seed"
+    "lint": "eslint --max-warnings=0 --ext .js,.ts ."
   },
   "devDependencies": {
     "@types/faker": "^5.5.9",
diff --git a/e2e-tests/cypress.config.ts b/e2e-tests/cypress.config.ts
index 9dff98a9b..7205ef9cb 100644
--- a/e2e-tests/cypress.config.ts
+++ b/e2e-tests/cypress.config.ts
@@ -56,7 +56,7 @@ export default defineConfig({
     env: {
       backendURL: 'http://localhost:4000',
       mailserverURL: 'http://localhost:1080',
-      loginQuery: `query ($email: String!, $password: String!, $publisherId: Int) {
+      loginQuery: `mutation ($email: String!, $password: String!, $publisherId: Int) {
         login(email: $email, password: $password, publisherId: $publisherId) {
           email
           firstName
@@ -69,7 +69,8 @@ export default defineConfig({
           hasElopage
           publisherId
           isAdmin
-          creation
+          hideAmountGDD
+          hideAmountGDT
           __typename
         }
       }`,
diff --git a/e2e-tests/cypress/e2e/User.Authentication.ResetPassword.feature b/e2e-tests/cypress/e2e/User.Authentication.ResetPassword.feature
index b0f660709..50a29d320 100644
--- a/e2e-tests/cypress/e2e/User.Authentication.ResetPassword.feature
+++ b/e2e-tests/cypress/e2e/User.Authentication.ResetPassword.feature
@@ -5,13 +5,13 @@ Feature: User Authentication - reset password
   # TODO for these pre-conditions utilize seeding or API check, if user exists in test system
   # Background:
   #   Given the following "users" are in the database:
-  #     | email            | password | name          |
-  #     | bibi@bloxberg.de | Aa12345_ | Bibi Bloxberg |
+  #     | email                  | password | name          |
+  #     | raeuber@hotzenplotz.de | Aa12345_ | Räuber Hotzenplotz |
 
   Scenario: Reset password from signin page successfully
     Given the user navigates to page "/login"
     And the user navigates to the forgot password page
-    When the user enters the e-mail address "bibi@bloxberg.de"
+    When the user enters the e-mail address "raeuber@hotzenplotz.de"
     And the user submits the e-mail form
     Then the user receives an e-mail containing the "password reset" link
     When the user opens the "password reset" link in the browser
@@ -19,7 +19,7 @@ Feature: User Authentication - reset password
     And the user repeats the password "12345Aa_"
     And the user submits the password form
     And the user clicks the sign in button
-    Then the user submits the credentials "bibi@bloxberg.de" "Aa12345_"
+    Then the user submits the credentials "raeuber@hotzenplotz.de" "Aa12345_"
     And the user cannot login
-    But the user submits the credentials "bibi@bloxberg.de" "12345Aa_"
-    And the user is logged in with username "Bibi Bloxberg"
+    But the user submits the credentials "raeuber@hotzenplotz.de" "12345Aa_"
+    And the user is logged in with username "Räuber Hotzenplotz"
diff --git a/e2e-tests/cypress/e2e/UserProfile.ChangePassword.feature b/e2e-tests/cypress/e2e/UserProfile.ChangePassword.feature
index aa853f6ff..b7aa6960c 100644
--- a/e2e-tests/cypress/e2e/UserProfile.ChangePassword.feature
+++ b/e2e-tests/cypress/e2e/UserProfile.ChangePassword.feature
@@ -5,14 +5,14 @@ Feature: User profile - change password
   Background:
     # TODO for these pre-conditions utilize seeding or API check, if user exists in test system
     # Given the following "users" are in the database:
-    #   | email            | password | name          |
-    #   | bibi@bloxberg.de | Aa12345_ | Bibi Bloxberg |                        |
+    #   | email            | password | name               |
+    #   | bob@baumeister.de | Aa12345_ | Bob der Baumeister |
     
     # TODO instead of credentials use the name of an user object (see seeds in backend)
-    Given the user is logged in as "bibi@bloxberg.de" "Aa12345_"
+    Given the user is logged in as "bob@baumeister.de" "Aa12345_"
 
   Scenario: Change password successfully
-    Given the user navigates to page "/profile"
+    Given the user navigates to page "/settings"
     And the user opens the change password menu
     When the user fills the password form with:
       | Old password        | Aa12345_ |
@@ -21,7 +21,7 @@ Feature: User profile - change password
     And the user submits the password form
     And the user is presented a "success" message
     And the user logs out
-    Then the user submits the credentials "bibi@bloxberg.de" "Aa12345_"
+    Then the user submits the credentials "bob@baumeister.de" "Aa12345_"
     And the user cannot login
-    But the user submits the credentials "bibi@bloxberg.de" "12345Aa_"
-    And the user is logged in with username "Bibi Bloxberg"
+    But the user submits the credentials "bob@baumeister.de" "12345Aa_"
+    And the user is logged in with username "Bob der Baumeister"
diff --git a/e2e-tests/cypress/e2e/models/SideNavMenu.ts b/e2e-tests/cypress/e2e/models/SideNavMenu.ts
index ccd177b66..b52f35ed4 100644
--- a/e2e-tests/cypress/e2e/models/SideNavMenu.ts
+++ b/e2e-tests/cypress/e2e/models/SideNavMenu.ts
@@ -11,7 +11,7 @@ export class SideNavMenu {
   }
 
   logout() {
-    cy.get(this.logoutMenu).click()
+    cy.get('.main-sidebar').find(this.logoutMenu).click()
     return this
   }
 }
diff --git a/frontend/package.json b/frontend/package.json
index 180959bc5..865ba060f 100755
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "bootstrap-vue-gradido-wallet",
-  "version": "1.19.0",
+  "version": "1.19.1",
   "private": true,
   "scripts": {
     "start": "node run/server.js",
diff --git a/frontend/src/components/Contributions/ContributionListItem.vue b/frontend/src/components/Contributions/ContributionListItem.vue
index ffbf29fdd..56546d183 100644
--- a/frontend/src/components/Contributions/ContributionListItem.vue
+++ b/frontend/src/components/Contributions/ContributionListItem.vue
@@ -25,7 +25,11 @@
           </div>
           <div class="mt-3 font-weight-bold">{{ $t('contributionText') }}</div>
           <div class="mb-3 text-break word-break">{{ memo }}</div>
-          <div v-if="state === 'IN_PROGRESS' && !allContribution" class="text-205">
+          <div
+            v-if="state === 'IN_PROGRESS'"
+            class="text-205 pointer hover-font-bold"
+            @click="visible = !visible"
+          >
             {{ $t('contribution.alert.answerQuestion') }}
           </div>
         </b-col>
diff --git a/frontend/src/components/Menu/Sidebar.spec.js b/frontend/src/components/Menu/Sidebar.spec.js
index 321d73a3a..e6e4cfe2a 100644
--- a/frontend/src/components/Menu/Sidebar.spec.js
+++ b/frontend/src/components/Menu/Sidebar.spec.js
@@ -49,15 +49,15 @@ describe('Sidebar', () => {
         expect(wrapper.findAll('.nav-item').at(2).text()).toEqual('navigation.transactions')
       })
 
-      it('has nav-item "gdt.gdt" in navbar', () => {
+      it('has nav-item "creation" in navbar', () => {
         expect(wrapper.findAll('.nav-item').at(3).text()).toEqual('creation')
       })
 
-      it('has nav-item "creation" in navbar', () => {
+      it('has nav-item "GDT" in navbar', () => {
         expect(wrapper.findAll('.nav-item').at(4).text()).toContain('GDT')
       })
 
-      it('has nav-item "Information" in navbar', () => {
+      it('has nav-item "navigation.info" in navbar', () => {
         expect(wrapper.findAll('.nav-item').at(5).text()).toContain('navigation.info')
       })
     })
@@ -68,13 +68,13 @@ describe('Sidebar', () => {
           expect(wrapper.findAll('ul').at(1).findAll('.nav-item')).toHaveLength(2)
         })
 
-        it('has nav-item "navigation.info" in navbar', () => {
+        it('has nav-item "navigation.settings" in navbar', () => {
           expect(wrapper.findAll('ul').at(1).findAll('.nav-item').at(0).text()).toEqual(
             'navigation.settings',
           )
         })
 
-        it('has nav-item "navigation.settings" in navbar', () => {
+        it('has nav-item "navigation.logout" in navbar', () => {
           expect(wrapper.findAll('ul').at(1).findAll('.nav-item').at(1).text()).toEqual(
             'navigation.logout',
           )
diff --git a/frontend/src/components/Menu/Sidebar.vue b/frontend/src/components/Menu/Sidebar.vue
index c6cc4c4e0..644fb37e0 100644
--- a/frontend/src/components/Menu/Sidebar.vue
+++ b/frontend/src/components/Menu/Sidebar.vue
@@ -13,7 +13,7 @@
             <span class="ml-2">{{ $t('navigation.overview') }}</span>
           </b-nav-item>
           <b-nav-item to="/send" class="mb-3" active-class="activeRoute">
-            <b-img src="/img/svg/send.svg" height="20" class="svg-icon" />
+            <b-icon icon="cash" aria-hidden="true"></b-icon>
             <span class="ml-2">{{ $t('navigation.send') }}</span>
           </b-nav-item>
           <b-nav-item to="/transactions" class="mb-3" active-class="activeRoute">
@@ -48,7 +48,12 @@
             <b-icon icon="shield-check" aria-hidden="true"></b-icon>
             <span class="ml-2">{{ $t('navigation.admin_area') }}</span>
           </b-nav-item>
-          <b-nav-item class="font-weight-bold" @click="$emit('logout')" active-class="activeRoute">
+          <b-nav-item
+            class="font-weight-bold"
+            @click="$emit('logout')"
+            active-class="activeRoute"
+            data-test="logout-menu"
+          >
             <b-img src="/img/svg/logout.svg" height="20" class="svg-icon" />
             <span class="ml-2 text-205">{{ $t('navigation.logout') }}</span>
           </b-nav-item>
diff --git a/frontend/src/graphql/mutations.js b/frontend/src/graphql/mutations.js
index 111eb7ab5..55858b09b 100644
--- a/frontend/src/graphql/mutations.js
+++ b/frontend/src/graphql/mutations.js
@@ -128,7 +128,7 @@ export const deleteContribution = gql`
 `
 
 export const createContributionMessage = gql`
-  mutation($contributionId: Float!, $message: String!) {
+  mutation($contributionId: Int!, $message: String!) {
     createContributionMessage(contributionId: $contributionId, message: $message) {
       id
       message
diff --git a/package.json b/package.json
index c28757c68..cba894803 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gradido",
-  "version": "1.19.0",
+  "version": "1.19.1",
   "description": "Gradido",
   "main": "index.js",
   "repository": "git@github.com:gradido/gradido.git",