Well, I followed the step by step guide from the youtube video (https://youtu.be/RwZmQ7QfhsM) wich was very helpfull and I get to the point where I can click ‘link your account’ then nothing happens… it’s the second time i tried this from scratch and to no avail… don’t know what’s going wrong
I had the same issue.
A few weeks ago, after having issues with my Wifi router, I reset my Google Nest thermostats and HA would not accept them. I deleted the Integration and tried to re-install it, but I had the same issue as you.
It took me a couple of weeks to resolve it when I found out that the Application Credentials of the previous GN Integration were still in HA.
- Go to Settings
- Devices and Services
- Top right 3 dots
- Application Credentials
- Remove the Google Nest credentials
- Redo the installation process
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Hey thanks for the reply,
there is only one credential made in this settings menu. The one I created just now. The other one never got thru i suppose.
delete it and try again
But it is nowhere to be found in my applications in HA
Do i need to add it in some way or should it do that automaticly?
I think i’m always bouncing of the wall where the pub/sub adress needs to be provided, something that is not explained in the youtube video. I’ve tried different things i read on the internet, made service accounts… I don’t know it anymore. Don’t know what adress to put in there, i know it needs the Pub/Sub publisher rights, but does it need to be pull/push? or something else I don’t get it
I know… It is awfully complicated and I had to redo it several times.
Make sure to follow steps exactly as described and remember the name given at the very beginning.
Once completed the Integration shows by itself.
p.s. groetjes vanuit Miami.
I finally got it working… just need to figure out now how to use the app over 4g, now only works on wifi connection.
thanks for the assistance my friend… also dutch? Haha, what are the odds… Are you from Holland or Belgium?
Groetjes uit Leopoldsburg, België
Happy to hear. Google does not make it easy but at least it is possible, unlike some other companies like Chamberlain/MyQ and others.
What do you mean with 4G / Wifi ?
I am originally from Rotterdam but in the US for 25 years.
Mine was working fine a couple of days ago, then out of nowhere it just stopped working. I’ve tried to set it up at least 10 time and all I’m getting is home and no entities.
That’s exactly what happened to mine, reconfiguring made it worse 
My two Nest Thermostats continue to work within HA. However, I received a Nest Thermostat 4 to replace the Nest Thermostat 2, in anticipation of the October EOL of the Nest 2.
I understand that to install it, I have to use the Google Home App instead of the Nest App. However, how to make sure that it appears in HA ?
Same problem here. Dont know when it started. Maybe after update thermostat end of august or after latert update home assistant?
I received the 4th generation and was able to add it to HA through the Matter Integration. I am still figuring out how to set HVAC Mode to ECO (when needed), but otherwise it seems to be working fine.
EDIT:
Ok, seems a Nest firmware may have caused the issues (?). I had to remove the Nest Thermostat from the app, go through setting up again. Then run through the HA Nest integration steps. The entities are now showing as before.
I have also just had the issue of the entities missing. With it just showing ‘Home’. As per others users.
This happened to me, i had to toogle on some values here: https://nestservices.google.com/partnerconnections
Seems reelated to room where Nest is located in nest/home app. Just activate all and integration should have device with the 3 entities again.
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Yes, this did it!
Did the same with success:
- remove and add again to the Google Nest App (iOS)
- remove and add again to Google Home (iOS)
- remove integration and again in HA
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Google Nest permissions were already toggled on. I removed the thermostat from the Nest app and re-added it, then toggled the permission back on as it was off now. The thermostat is available in home assistant again after reloading the integration but the old thermostat entities were still showing, the “new” thermostat had _2 added to the entity ID’s. I manually removed the old entities and renamed the “new” ones to avoid having to reconfigure all my dashboards and automations.
One detail: the integration is now showing two devices (one of which I removed the entities). I disabled the “old” thermostat device already, however I’m wondering if there’s another action I can take to completely remove it?
I did a restart a couple of days ago and it started working again