Process For The Nest Integration

Hi there
Constantly getting the following error.

No access to partner
Information could not be retrieved. Please contact PROJECT 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.

What should be the process for setting up the Google Home & Nest Camera.
I set up a Google Home added the Camera. Should I be doing it a different way?
Has anyone experienced this error before and have managed to overcome it?

Thank you

Double check the settings around the oauth consent screen, in particular make sure the status is set to publishing rather than testing

Also check out Partner Connections Manager Error Reference  |  Device Access