Unknown trusted phone number
Before 3 months I sold my Xs max logging out from my account and resetting to factory. Now I bought pro max and tried to log into my new phone and unknown trusted number appears . Spoke with customer service and they says nothing can be done without the full trusted number. I can’t believe this. I am using my ID since 2013 all my photos and videos are there. Anyone, any ideas?
iPhone 11 Pro Max, iOS 13