Coinbase verification is completely hit and miss. I think I ended up going through the website rather than the app, but I also would suggest using something else if you can. They've got the simplest ui but their fees are huge compared to the likes of binance/bitfenix/others.
How come? Where else do you recommend?
Edit - just had an email from Coinbase saying they were unable to verify from identity. I used a photo of my drivers license.