I changed the temperature unit from Fahrenheit (°F) to Celsius (°C) on the thermostat, however, the Schluter Smart Thermostat app is still displaying the temperature in Fahrenheit (F). Why are the temperature units not syncing between the thermostat and the app?

Settings such as temperature unit (°F or °C), time (12- or 24-hour clock), and language (English or French) are not synced between the Device and the Account. To set preferential settings in the Schluter Smart Thermostat app, you will need to make and save changes under the Device section and the Account section, separately.