So, I downloaded Google Wallet, since I downloaded it on my GW4, and I have a small insight
The Beta version says this, but it works just fine... Just in case you download it
EDIT: Watch app doesnt work either, maybe its a bug?
Google Pay quit working for me all together. No NFC and no app/web payments. Happens with the beta software because it isn't put through Google's certification/signing process. Last beta Netflix (and other pay to stream services) quit working too. It really throws a cramp in beta testing. I need NFC in Google Wallet to work for my transit card.