You have the device set to Off but it will turn back on after a a set amount of time. Check the Tado app to confirm this.
For the future: it’s a lot easier to help you with layout things, if you specify which card you are using. Here you are using Mushroom cards, which not everyone has installed on their HA instance :)
Ah I see. Strange thing is I haven’t actually installed the tado app at all. I just needed to press the pairing button on the hub and the thermostat paired to it, then it showed up as a homekit device in home assistant.
Oh and sorry for not being more specific regarding card type… I just figured the default icon would be the same irrespectively
Time sensitive notification
This means that the Thermostat is in AUTO-Mode (working on the schedule)