Google Nest Integration No Devices

I have gone through the setup of the Google Nest integration. It seems to go ok but when finished I have no device or entities.
The previous integration worked ok.

I have followed both the video and the written documentation but it end the same. The integration is configured but no device or entities are created.

Any Ideas?

The 1 device and 3 entities turned up overnight without me doing anything to resolve the issue.