I followed all the steps in the documentation but it doesn’t work at the last step.
I use the same Google account for everything and it is also this account that owns my house on Google Home
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 think the account the message is referring to is the Nest account. When Nest was taken over by Google a few years ago you had the option of migrating to Google if you wanted to, but it sounds as if you kept your legacy account.
When I remove access to Nest in my Google account settings it removes my Nest hub from Google Home, so I get a message that says I have no devices when I try to link to home assistant, so I put it back as it is on my local network and I get the error from the beginning again