2GIG-STZ Thermostat issues

I have 2 2GIG-STZ thermostats, they are detected and seem to work OK, however their state (e.g heating,cooling,idle) often seems to be reflected incorrectly in HA - it’s almost as though either the thermostat isn’t sending an update, or HA isn’t receiving it (any thoughts on how to debug). I also have a GoControl thermostat and that doesn’t seem to have similar issues.