When accessing the app, the changes you make on the app do not always make changes on the thermostat. Always check thermostat for your changes. It’s very annoying that there seems to be lack of continuity. I’ve experience this on an iPad and iPhone.
The thermostat was easily set up with the default router wi-fi address. The house was then set up on the correct wi-fi address and I have been unable to find instructions for changing the thermostat.