What to do after [or before] you change your Apple ID email address or password - https://support.apple.com/HT204071 - "After you change your Apple ID email address or password, you might need to update your sign-in information with any Apple services you're using." E.g., if you are getting persistent sign-in messages.
Can’t get into my Apple ID because of security reasons, and it takes me to reset , and I do reset password, and still does the same thing locks me out
2 replies
If necessary, contact iTunes Support. Scroll to the bottom of the page in the 2nd link.
Apple ID keeps locking me out