I clear cookies once in a while and usually can recover my account but this time, no option to recover: https://i.imgur.com/vb1mliN.png

Even if I have the correct login and password.

Luckily, I forward all my emails to a 3rd party so I should still be able to read my new mail but I lost access to a lot of other stuff.

Edit: Account recovered. I used chromium to login (which I never do) and then back to Firefox.