I’d agree it doesn’t appear related to the hardware or firmware — connecting using a web browser continues to work without issue. The v3.0 device has been operating for a few months now since install, and it’s been flawless.
I’ve force-killed the app a number of times, as well as outright deleting it and redownloading it from the App Store multiple times. No luck. As I mentioned, I also restarted the controller and the access point just to be thorough.
Feel free to ping me if there’s any other information I can supply.