Thermostat offline in nest app but online in google home

[chirag884]

My thermostat is showing offline in nest app home.nest.com , but same thermostat is online in Google Home app and I can still control it thru Alexa and other channels.

[chirag884]

1. removed thermostat from app
2. reset thermostat
3. added it back.

lost my history for last few days - but looks like it was added back with same schedule. 

Still wonky in places as all leaf earned are lost.