Innogy Binding - No connection to innogy service

My Innogy SMC can no longer connect to the innogy Smarthome service. It was working until now under 2.5.5 without problems with the new innogy API.

What I have tried:

Update to Openhab 2.5.9
Delete all innogy things
Uninstalling the binding
Stopping Openhab
Deleting the cache and tmp folders
Installing the binding new
Creating a new auth code for the SMC
Restarting the machine or Openhab

The whole thing several times, unfortunately without success

The following message is displayed in the log:

innogysmarthome:bridge:SMARTHOME08’ changed from INITIALIZING to OFFLINE (CONFIGURATION_ERROR): No innogy access token. Is this thing authorized?
I tried several auth-codes without success.

Otherwise the Innogy system himself works perfectly.

I have recorded a Backup and it is running again