I have been unable to login to avast through the UI for a very long time. Now that my chrome avast passwords plugin broke, i had to reinstall it and I'm unable to synchronize my passwords as it is impossible to login through the UI.
Note: I am able to login through my.avast.com just fine, but never the Avast UI.
This is the problem I am getting when trying to login after clicking the "Sync Passwords" button

And this message I get during login on top right corner of avast UI.

After i click "Sign in with an existing account" during that error then i get "You are already logged in."

EDIT: I am finally able to login today but the UI is still very buggy. It seems the Passwords server was having issues or something but is now resolved a bit.