Same thing here.
I uploaded a perfect picture of my passport and also my drivers's licence.
I keep getting the message:
Add a clearer photo of your ID
It’s difficult to see your ID clearly in the photo you added. To help us make sure it’s you, we’ll need a clear photo of your ID. Then we can match this photo with the photo you took of yourself.
It is really annoying!
I have spent hours talking to the "help" desk. They totally do not care. I asked to talk to a supervisor. All refused.
This is really, really bad service.
Just booked an old fashioned hotel. This was done in less than a minute. No uploads of ID cards, nothing.
God, do I just love hotels!!