diff --git a/backend/src/federation/validateCommunities.ts b/backend/src/federation/validateCommunities.ts
index 686465ac7..6ee4f645a 100644
--- a/backend/src/federation/validateCommunities.ts
+++ b/backend/src/federation/validateCommunities.ts
@@ -53,6 +53,8 @@ export async function validateCommunities(): Promise<void> {
       // eslint-disable-next-line camelcase
       if (client instanceof V1_0_FederationClient) {
         const pubKey = await client.getPublicKey()
+        logger.debug('Federation: nach getPublicKey()=', pubKey)
+        logger.debug('Federation: dbCom.publicKey=', dbCom.publicKey.toString())
         if (pubKey && pubKey === dbCom.publicKey.toString()) {
           await DbFederatedCommunity.update({ id: dbCom.id }, { verifiedAt: new Date() })
           logger.info(`Federation: verified community with:`, dbCom.endPoint)
diff --git a/federation/src/graphql/api/1_0/model/OpenConnectionArgs.ts b/federation/src/graphql/api/1_0/model/OpenConnectionArgs.ts
index 9afdbca5f..9752f4e6f 100644
--- a/federation/src/graphql/api/1_0/model/OpenConnectionArgs.ts
+++ b/federation/src/graphql/api/1_0/model/OpenConnectionArgs.ts
@@ -1,6 +1,6 @@
-import { Field, InputType } from 'type-graphql'
+import { ArgsType, Field } from 'type-graphql'
 
-@InputType()
+@ArgsType()
 export class OpenConnectionArgs {
   @Field(() => String)
   publicKey: string
diff --git a/federation/src/graphql/api/1_0/util/authenticateCommunity.ts b/federation/src/graphql/api/1_0/util/authenticateCommunity.ts
index 95c558f98..7b6e803dd 100644
--- a/federation/src/graphql/api/1_0/util/authenticateCommunity.ts
+++ b/federation/src/graphql/api/1_0/util/authenticateCommunity.ts
@@ -9,19 +9,13 @@ import { AuthenticationClientFactory } from '@/client/AuthenticationClientFactor
 // eslint-disable-next-line camelcase
 import { AuthenticationClient as V1_0_AuthenticationClient } from '@/client/1_0/AuthenticationClient'
 import { AuthenticationArgs } from '../model/AuthenticationArgs'
-import { stringToHex } from '@/util/utilities'
 
 export async function startOpenConnectionCallback(
   args: OpenConnectionArgs,
   requestedCom: DbCommunity,
   api: string,
 ): Promise<void> {
-  logger.debug(
-    `Authentication: startOpenConnectionCallback() with:`,
-    args.url,
-    stringToHex(args.publicKey),
-    requestedCom,
-  )
+  logger.debug(`Authentication: startOpenConnectionCallback() with:`, args, requestedCom)
   try {
     const homeCom = await DbCommunity.findOneByOrFail({ foreign: false })
     const homeFedCom = await DbFedCommunity.findOneByOrFail({