I had the same problem Richard describes when I went to set up my ring today, but I don't run any adblock apps. I tried repeatedly, got the tone multiple times, but it would never move on, just give the help or finish boxes. I gave up to go to dinner, and on the way home (someone else was driving, promise) was checking my phone and accidentally scanned my ring. It popped up a box asking if I wanted to go to the NFC ring website, I said yes, and it took me there and from there gave me the option to click on the control app, and I tried to register the ring again and it worked the way it was supposed to, no problem.
The whole thing was extremely frustrating, but there's another datapoint for anyone else having the same problem. I am also using the most recent version of the app, downloaded yesterday.