Unable to delete all devices in coupled hass.io in Google home

HI,

after an initial succes coupling my hass.io into Google Home via HA cloud, i am trying to cut down on the exposed devices. Without any filter, it had of course exposed all devices, which are more than 400…

so Ive set a filtering in the cloud: setting in configuration,yaml, and the Google assistant integration page shows that correctly.

In the Google Home app however, still all 400+ devices are available. Clicking the sync devices shows a red button. And I can’t delete the hass.io from the app, which displays a ‘something went wrong’ message.

Any thoughts on what I could try to do please?
thanks