Thank you for your recommendation - your experience is definitely valuable. We're currently awaiting the next review, and in our response we clarified that the requested information had already been provided earlier. We also make sure to duplicate all relevant review materials in the “Notes” section of the app submission. So probably, some users will do the same error. Can you catch it and alert if user makes the mistake ? We actually tested that screen with hundreds of real users, and the reviewer was the first one who couldn’t enter a phone number correctly. The input is very clear — the country code is already prefilled.