Canna use https://chat.fedoraproject.org/

Could be a Matrix problem!!

I only see successfull logins in the logs. :(

I see you are logging in with your email address, try using just the account name?
also, can you try in a private window, any change there?

Just tried here. Yes, the main page (This thread's first image) indeed looks broken to me.

But otherwise, I am able to login just fine. @nonki try to login a couple times in a row. Sometimes, using the Fedora ID system gives that 400 error, but if you try again it works fine.