Cant delete linked service from Google Home

Third party integrations
1

I have about 14 Google Home-devices. 2 years ago something went wrong with the linked service to HA by Nabu Casa. I cant unlink the service anymore and I do have a lot of ghost entities, 185 of them. On the page where to reconnect or unlink the service it says I have 1674 devices. What? The Google Home app is slow and krasches. I have deleted other familymembers, deleted all homes/houses, clear storage for the app on my android. Even reinstalled the application. Stoped the integration from Home Assistant.
Still, the linked service cant be unlinked. Nor syncing devices.

Screenshot_2021-12-03-09-56-48-651_com.google.android.googlequicksearchbox
Screenshot_2021-12-03-09-56-48-651_com.google.android.googlequicksearchbox1080×2340 178 KB

Any idea on how to proceed?

2

if you only have one home user, deleting the home would remove everything and you can start from scratch with a new home.

3

As soon as I create a new home those linked entities are present again and the link to HA by Nabu Casa is still linked. If I could get rid of that link.