Hello,
For help with an invalid/not-active/not-supported account you need to contact Apple (the people on this forum are users like yourself).
To reach Apple Support for an account issue:
1. Click here --> https://getsupport.apple.com/?caller=cups&PGF=PGF63005
2. Select: Disabled Apple ID
3. Select: ”The Apple ID is not active" alert
4. Select: “Continue”
5. Select a chat or telephone call option.
or:
Contact Apple for support and service by telephone --> Contact Apple Support - Apple Support
From: If you can’t create an Apple Account or see “your account cannot be created at this time” - Apple Support
“If you’re trying to create an Apple Account and see a message that says the email address or phone number is unavailable or can’t be used, then an Apple Account already exists that uses it. Try a different email address or phone number, or reset your password for that account ( If you forgot your Apple Account password - Apple Support ).”
My personal comment: This bit about not reusing phone numbers makes no sense to me. Apple apparently expects everybody using their equipment to have their own telephone and phone numbers to have never, ever existed before. Even in this day and age people may share a telephone.