Can't log in with Apple ID or Recover Apple ID as can't confirm Trusted Phone number.
My son is a family member and has iPhone 11. We need to change some settings but the trusted number on the account doesn't work. We don't receive the verification code by SMS or the voice call to authenticate. The last two digits are the same but it's showing as error. We've tried the international codes/local area codes and multiple variations. We can't begin account recovery as we can't log into his Apple account either from the trusted device, his iPhone or a web browser.
We've tried the support app to reset the Apple ID password with account recovery but again, we can't complete that because 2FA is set up on his Apple ID. We have the trusted device and his device.
It appears we've reached a dead end without the trusted number with no other way to verify the account?
Am i correct that our only option now is to set up a new Apple ID?
iPhone 11