Nest Integration -- Access Blocked: Authorization Error

I’m having issues with my Nest integration. I have followed all the steps to a T. I got frustrated and wiped my Home Assistant OS and started over “from scratch”. I’ve wiped & re-created OAuth credentials, Cloud project ID, DAC project ID. I then set to enabled in production, input a test user, enabled the pub/sub topic, etc. I am still coming up to the same issue.

When I add Google Nest integration, input my Cloud project ID, DAC project ID → I get to the Google screen to choose an account → I select the account → then the Tab (Parnter Connection Manager) screen displays “Something went wrong. Please contact the developer of this app if the issue persists.”

Has anyone come across this particular issue??