Booked a nice place in Italy yesterday, had to then go though the ID verificaiton process (not a new user, but never had to do the ID thing before).
I too have gone around and around in a loop, uploading progressively higher resolutiuon pictures of my passport.
I do this 5 times. Same problem every time.
I then contact Airbnb support, support respond with "please do this...". Lo and behold, it turns out "do this" is actually : do the exact same thing you have already done 5 times.
I go through the process again.
Same result.
Then I got this email "...Because we couldn’t confirm your profile, your reservation for ... was cancelled."
Closely followed by "A refund ... has been issued to your credit card ... While this refund is immediate on our part, it can take up to 15 business days for the funds to reach your account."
So AirBnb's verification process fails abyssmally, I lose my booking and on top of it all I have to wait up to 15 days for the funds to be returned to me.
Nice one AirBnb ... what a result !!!
(Airbnb : FYI, that last comment is laden with sarcasm: get your act together).