Nest thermostat switching off on its own

Anyone else experiencing this at all.
None of my routines or automations or anything calls for my thermostat to actually switch off. I do have routines set up to set the temperature, as I’ve always had. But now when I went into ‘away’ mode, my nest is switching off for whatever reason.

Found out it’s just switching off even with routines where it’s supposed to just adjust the actual temperature. Rather than set the temp, it’s turning it off.
Is no one else getting this with their Nest thermostat?

I have always used Google Home to set the thermostats to Eco mode because I don’t believe it was possible from ST.

Yeah it’s possible. But even just setting the temp turns the thing off. As of yesterday. Haven’t done a thing.

I have always used Home and Away settings in Nest App.