I didn't even know there was a place to scan passport photo but then I logged in again to check it out and looks like it's related to Tax Free QR Code. I first tried it on my desktop browser but of course my desktop doesn't have a camera so I switched to mobile browser (Safari) on my iPhone and I was able to get the scanner functionality to work on my first try. The scanner page was a little slow to load/start but otherwise I didn't have any trouble. I made sure my passport page wasn't directly shined under some light though to remove any possible light reflections. Also I think the tip is to make sure your passport photo lines up nicely with the white outline and the rest of the photo page.