Can't log in

I updated HA OS yesterday. And now… I can’t log in anymore. When I try to access HA it sends me to - what I assume is - the new log-in screen. However, there I cannot enter any credentials.

It does not matter if I use the http-IP adress or the https-duckdns adress to try and log-in. Same screen appears.

Anything I can do? Or how could I roll back easily? I have remote back-ups on my Synology…

System is running on a N2+.

Thanks!

solved. updated to next beta through CLI.