A old email address has got me stopped. I cannot delete it stop.
How do I delete an old email address. Question how do I replace it with my other email address?5
iPad Pro 10.5-inch, Wi-Fi
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The email for your AppleID? If not that, replace it where?
Note the restrictions in the article.
What to do after you change your Apple ID or password - Apple Support I suggest doing this before you change your Apple ID or password.