Another weird data point. When I initially load the Home App, there is a
brief animation that shows the Nest Learning Thermostat signalling its
online status (where the grey icon turns blue, hard to explain but
you'll know it when you see it). Diagno...
Also have this problem -- did a Google Home app update cause this?
Weirdly, a second Nest Learning Thermostat for my secondary HVAC is
showing up just fine in both Home and Nest; it's the first one (same
model) that only shows up in Nest, not Home.