FWIW, I updated to v1.6.7 and noticed the connect button with the options UDP and USB. I was connected to the solo wifi and wanted to connect via wifi (not UDP or USB). I hit the connect button once with no effect and when I hit it again, the voice feedback asked me to hit the button again to connect to wifi. Once I did that, I connected to the vehicle and was off flying with a boat load of telemetry at my finger tips.
Awesome app. Keep up the good work!