How to confirm identity on facebook marketplace

i am trying to create a listing on fb marketplace.

i receive a message - some of your listings need your review

more info needed to publish this listing

confirm your identity

confirm your mobile number

select your phone number

enter confirmation code

NOTE: I have an iphone 11 - i never receive the 5 digit sms code sent to my iphone so i cannot continue.

How do I resolve this problem?