diff --git a/backend/src/federation/authenticateCommunities.ts b/backend/src/federation/authenticateCommunities.ts
index ad07f230a..829c48ea2 100644
--- a/backend/src/federation/authenticateCommunities.ts
+++ b/backend/src/federation/authenticateCommunities.ts
@@ -23,7 +23,7 @@ export async function startCommunityAuthentication(
   logger.debug(
     'Authentication: started for foreignFedCom:',
     foreignFedCom.endPoint,
-    stringToHex(foreignFedCom.publicKey.toString()),
+    foreignFedCom.publicKey.toString('hex'),
   )
   // check if communityUuid is a valid v4Uuid and not still a temporary onetimecode
   if (
@@ -43,6 +43,11 @@ export async function startCommunityAuthentication(
         args.url = homeFedCom.endPoint.endsWith('/')
           ? homeFedCom.endPoint
           : homeFedCom.endPoint + '/' + homeFedCom.apiVersion
+        logger.debug(
+          'Authentication: before client.openConnection() args:',
+          args.publicKey,
+          args.url,
+        )
         if (await client.openConnection(args)) {
           logger.info(`Authentication: successful initiated at community:`, foreignFedCom.endPoint)
         } else {
diff --git a/federation/src/graphql/api/1_0/resolver/AuthenticationResolver.ts b/federation/src/graphql/api/1_0/resolver/AuthenticationResolver.ts
index 5ec45b55a..d36ec7a10 100644
--- a/federation/src/graphql/api/1_0/resolver/AuthenticationResolver.ts
+++ b/federation/src/graphql/api/1_0/resolver/AuthenticationResolver.ts
@@ -21,6 +21,7 @@ export class AuthenticationResolver {
   ): Promise<boolean> {
     logger.debug(
       `Authentication: openConnection() via apiVersion=1_0 ...`,
+      args,
       args.url,
       stringToHex(args.publicKey),
     )