I can't add an email that used to be associated with an apple id
I can't add an email that used to be associated with an apple id. My old apple id had a certain email. Then I made a new apple id, and I deleted the old one and now it's been deleted for a while. Of course, the new apple id is made using a different email. But now I want to add the old apple id's email to the emails I can be reached at with. But apple is not allowing me to do so. What do I do?
iPhone 13 Pro, iOS 15