FaceTime and iMessage asking for very old Apple ID password and other issues..
I am on BigSur 11.6, I changed my Apple ID awhile ago. My MacBook is correctly signed into the new ID and contacts, iCloud, Cards, etc all work as normal. I followed all the steps for changing Apple ID on the support site.
FaceTime and iMessage keep asking for my password to my Apple ID, but it shows an email that was from years before, even older than my previous ID...I am not even sure if it was ever my Apple ID. When I enter the password, it says incorrect (of course) but then asks for my current Apple ID. I enter the current one, and the correct password, and after several minutes it says 'An unknown error Occurred'. If I enter the wrong password (tried it on purpose), it immediately says incorrect password, so it leads me to believe it is communicating with the server correctly.
Also, I use FireFox, and it will not allow me to enter the password for my firefox account, it just says incorrect password (even though I know it is right) and asks again. I also cannot sign out of FireFox. I even deleted the app, and re-installed, and it shows me signed in still and asks for the password again. I am thinking there is something corrupted that is storing all this old account stuff?
As far as Apple ID, everything works except iMessage and FaceTime. All other Apple ID related functions show my current ID and work fine.
MacBook Pro