So I just got the v2 hub and I am using the new app not the classic and it is fully updated. I was able to add my AV receiver, TV, and door lock but for some reason I cannot add the Ring 2 doorbell.
It gives me an error shown in the photo attached. The ring is on the wifi and I can connect to it using the ring app. I have tried 2 different wifi networks that I have but it was a no go.