The thermostat is great but the app continues to say the thermostat is offline. If you look at the actual thermostat it is online but as the app constantly says it is offline you cant always control it from the app. Yes I have tried all the items in the help documentation and even went as far as purchasing a new, and different brand, wifi router even though none of my other wifi devices have any issues, including the thermostat. Fix the app disconnect issue and I will raise my review to 5 again