We are stopping use of one of our thermostats for now (the upstairs one) and we can’t figure out how to remove it from our account. It seems to be making refreshing both thermostats in the app very slow.
Removing it as a device from the control panel will remove it entirely from the account and you could just use local control until the point you want to re-add it.
Bring the panel near the thermostat and select “Services - Zwave - Wrench - Installer Code - Remove Devices” On the thermostat, perform the zwave pair procedure. On a CT100 that would be “Menu - Mate x 2”