Nest Thermostat is frequently showing as “offline” in the Google Home App

[Marnet11]

On a daily (or every other day) basis, I will go into my Google Home app to adjust the temp on my Nest Thermostat and it will say “Offline”. The only way I have found to rectify this is to physically go to the thermostat and restart it. Which means I have to be home. (I have not found a way to do it from the app, which is very frustrating.) BTW, the WiFi is always showing as connected on the thermostat whenever this happens!!

Is anybody aware of any known-issues surrounding this?

To save us some time:

Yes, my app is the most recent version.
Yes, I have already tried deleting the app and reinstalling it. 
No, I do not have any WiFi interference issues between my router and the thermostat.

Yes, my batteries are brand new.

Yes, I have verified that the thermostat firmware is the latest version. 
Yes, I have tried restarting my smartphone when this happens. 

[D3annadynamite]

I have the same issue!!

[ReitM]

Same issue for me as well

[CarrieOkie]

same

[Marnet11]

I called the Google Help Line. They were VERY nice. They helped me to do a factory reset. Will see if this helps. Fingers crossed. 

[Enicolewright]

I also have the same issue. I have reset, uninstalled and reinstalled, factory reset, removed and re-added to the google home app, changed batteries, reset router, and it STILL does it. It i reset it will show online for a bit but then goes off again

[bobaloo46]

Same issue .Shows offline in app every few days.Always connected on the wall mounted thermostat.