Bests & Worsts Reviews from Amazon

I installed many thermostats before. This one was easy to install. But, the app has bugs. I set up schedule on the app when I installed it. It disappeared 2nd day. I rebooted by turning off furnace power & it show the error message “Therstate is not working properly, ....” on the screen & no longer worked. There is no way a thermostat die after a few power on and off. What happens if there is power outage? App only works for one day. This product is not ready for prime time. I return it.