Delete old Apple ID?
How do I delete an old Apple ID, so that I may sign in with the new one?
MacBook Air 13″, macOS 12.5
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If you have changed your ID, have you followed the steps in this article on all devices/computers? Make sure you turn off Find My Phone before signing out of the old ID. Once signed out and Find My Phone is off, then sign in with the new ID, then turn Find My Phone back on.
What to do after you change your Apple ID or password - Apple Support. *.