Same thing happened to me, and I tried to email them about a clear bug that occurs. They wanted the same photo verification. I was very nice in the correspondence until they requested photo verification a second time, and I was so confused why they were being so incompetent about it. It's a 0 follower account that I never had access to in the first place because it instantly got disabled, why would I care? Just fix the bug...

Basically, if you try to change the username before completing the sign up workflow the app doesn’t continue to the next page and the account gets disabled. Judging by your experience they seemingly haven't fixed it still. I emailed them in October 2019 about it, pretty sad.

Their final message to me was "We can’t give you access to this account or continue to process your request because we haven’t received an acceptable image to verify account ownership." Thanks for nothing, Facebook.