How come everytime I try to type in a different apple id name is says: Apple ID Error: Enter a valid email address to use as your Apple ID.
I'm trying to change my apple id name, because I set mine up first when I was younger. And to me it seems inappropriate to be sending emails with that address. Whenever I try to change it to something it keeps saying: Enter a valid email address to use as your Apple ID. I have no idea what this means or how to make it valid to use.
iPhone 11 Pro, iOS 15