So I tried the Win7 app, same problem. I have a dual-band Netgear WNDR3700v2, no issues with it ever. AP isolation is off, tried with NAT off and on, etc.
Then I tried with my phone hotspot, same issue. Can see, but gets stuck on 'Connecting to .....' screen and then goes back to code entry display.
If I'm having the same issue with 2 different hotspots, should I just get a replacement, or am I missing something? I'm thinking replacement at this point.