Set up
We are trying to set up my daughters new iPhone XR and we get to the two-factor authentication and it won’t text or call us a code because it says we’ve asked for too many codes.
Question marked as
You will need to wait at least 8 full hours to try again. After that point you should have no problem.
If you had previously added an additional trusted number to that account, you can use that. Otherwise you'll have to wait.
Note: You'll definitely want to add an additional trusted number later on: