Mail app
Uh I haven’t used the mail app in a while but it signed me out and it’s not letting me back in, how do I do it with my Apple ID? (Don’t want to add a new account on the phone)
Question marked as
Device or computer?
IOS
Have you tried deleting the account, restarting the device, and then adding the account back?
OS
What does Mail/Window/Connection Doctor Show? If the server is red, select it and look at the Show Details box.