Oh, i think i fixed it by myself.

When i click Reload, the error still shows up. But everytime i click Reload, i see a Register button in a splitsecond.
Then i tried to be fast, click Reload and then Register. After that, i could select login Again and now it Works fine without problems.

The topic here can be closed. Thanks for fast answering. I will send a ticket if the problem appears Again :slight_smile: