Extremely frustrating. I have been trying to connect my thermostat to the app for an hour and it always messes up at the end. When I'm connecting it to the 2.4Gz network, I get a prompt asking for it to connect to the Lyric network only for a split second and then suddenly it says the application exited the request or something. Then the thermostat acts like it worked, but the app just freezes on the home screen. Awful experience. I'll just keep using it without WiFi.