Hello Kusanagi,

I assume you are referring to your Mozilla account. If not, please clarify. If it is your Mozilla account, you can continue under “Settings” > ‘Synchronize’ > “Log in.” You will receive an Verification code on your email to complete the sign in Alternatively, you can enter “about:preferences#sync” in a new tab, which should redirect you to the correct menu.

Best regards,

Hello

Is it this subject. https://www.camp-firefox.de/forum/thema/139882-firefox-konto-wo-ist-der-anmeldbutton-hin/?postID=1279936#post1279936

1 - Go to Configuration Editor for Firefox https://support.mozilla.org/en-US/kb/about-config-editor-firefox 2 - Enter a search term identity.fxaccounts.enabled (value by defaut true) If value not true, please change and restart Firefox.