iCloud
Q: itunes
I changed my apple id and now when I try to use itunes it still has my old id so I can't sign in
MacBook Pro with Retina display
Posted on Sep 25, 2016 2:04 PM
by King_Penguin,Apple recommended
iTunes
Log out of the account and back in with the new/updated account e.g. Account > Sign Out menu option on a computer's iTunes etc : What to do after you change your Apple ID email address or password - Apple Support
Posted on Sep 26, 2016 12:42 AM