Checked that, more then twice. 
It is an old account, I created it with ***@googlemail.com, some years ago it was changed to ***@gmail.com. But both are not working.
And yes, had it on “production”, but was not working for “test”, too.
Other folks have reported that deleting the google home, then re-recreating it works for some reason. Maybe give that a try…
I am having the same issue. But I’ve also realised that I don’t have any nest devices that are supported by the API: Device Access | Google Developers
I wanted to use my nest hub as a motion sensor, but only nest hub max is currently supported
Any update on this?. Same issue for me, went thru the process twice but receive the following error message:
No access to partner
Information could not be retrieved. Please contact xxxmyprojectherexxx to verify that your account has been properly set up. You may need to add the developer email address as a home member in the Google Home app settings.
Is this a firewall issue?
Thanks in advance
A
I am also facing this issue. Would be great if this could be solved.
I believe this usually happens when multiple accounts are involved – make sure you’re using a single account across the home app and device access console and google cloud console.
I found a solution!
Looks like my account was still a Nest.com account. But Nest was bought by Google.
So there’s a process where you can migrate your Nest account to to your Google account.
- Go to https://home.nest.com/
- Follow the instructions
- Try again, you shouldn’t see the error again.
After spending hours, creating new projects, new users, new certs, I found a comment post on the bottom of website, of the video creator for the youtube video which is embedded in the Home Assistant Google Nest page.
I had not migrated my old Nest account to a Google account. Doing this migration via the Nest app fixed everything and allowed me to link my account without the “No access to partner” error message.
I have raised a PR to update the official documentation.
Copy of my edit.
“- No access to partner information “Information could not be retrieved” error message during the setup wizard means that the Google Account used is not able to access the Home. Please ensure that you have successfully migrated your Nest Account to a Google Account using the Google Nest App. Additionally, if your home has multiple members, please note that the individual who initially set up the home must complete the migration of their Nest Account to a Google Account before you can establish a connection with Home Assistant.”
I believe this fixed the issue, can I ask if you could please mark this post as the solution, to help others find it in the future? 