The problem resides with old Apple devices set up with the old iTunes/iCloud email account that doesn't automatically update to the new AppleID when changed. For example, we have one iPad setup with which has been transitioned to This worked honky-dory until updates became an issue as of tonight.

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Try All Possible Passwords for iTunes Account. The first method which you should try if you are …

Apr 13, 2020 How to ease the transition to a new email account | PCWorld Sep 27, 2013

How to Change iTunes Account on iPhone or iPad

How to Change Apple ID Email, Billing Address, Credit Card Feb 20, 2020 How to Change iTunes Account on iPhone or iPad Jan 16, 2018 How Do I Change My Apple ID On My iPhone? The Fix!