Cannot link Alexa Skill with myopenhab - Internal Server Error

I got a new 2.2 setup and installed/uninstalled due to troubleshooting the Alexa skill several times.

When I try to re-install the Alexa Skill I got routed to the OAuth2 from, but after entering my user/password and click on “accept” I get a plain website with “Internal Server Error”.

I tried to remove the Alexa Application in my account. I see 2 Alexa skills linked as application, but both cannot be removed when I click on the trash bin - just nothing happens and they are still there.

That got fixed with the latest down time.