Cant login gitlab.com anymore, get 422 error

I can’t login my gitlab.com account anymore. After a successful login (with 2FA) I am redirected to 422 error page saying:
422 The change you requested was rejected
And I’m logged out again.

I waited a couple hours, deleted my cookies, tried a different browser, but nothing helped. Since there is no downtime or issues at the moment, I hope somebody can help me. What is wrong with my account?

Kind regards
Ricky

There are currently service problems.

So how should I be able to login again?

Wait until they fix the problem - service is affected. Has nothing to do with your login, but entire Gitlab.