Over the past couple of days I’ve been getting repeated requests from my appletv and iPhone requesting me to re enter my Apple ID password. I can understand one request in each device, but the fact that it doesn’t stick has me worried. Am I alone, or is this something anyone else has heard reported?
If it looks good, try rebooting your devices. Sometimes they get into a funky state where they lose the login credentials.
If that fails, wait a day or two. Apple’s servers sometimes get into a state where they forget your logins (or even reject them). They usually get fixed a few hours later.
If the problem is persisting across restarts and has lasted for a few days, then contact Apple support.
Good advice from David nothing to get in a panic about it all works out irritating I know.