I had iOS 11 beta 3 and my iPad crashed during the iOS QA beta 4 update. I had to restore to iOS 10 then update again. Unfortunately, now I need to change my Apple ID on the ipad as my restore from backup used the wrong Apple ID. In settings, I can’t change my Apple ID as it forces me to add an email address prior to deleting the old Apple ID, but I cannot add a new email address.
Any ideas?
Any ideas?