Signing out seems to be the issue.. I haven’t used it in years, and I don’t have the password written down, so know I have to change the password but I don’t remember it. And I don’t have it written down anywhere. I am connected to the Cloud, so if I change it with my phone or iPad, it should change for all three, right?
If you don’t know the Apple Password welcome to about 15 days of Hell to change it.
I gave my sister a new iPhone and she did not know her Apple Password it took 15 days dealing with them to reset and get a new password.