Google Home Integration failing to link

Hello folks, anyone else having issues to link the [test] my test app to the Google Home account?
Google home redirects to my HA duckdns ulr, I successfully log in and the account does not link. I had a similar issue with other accounts as well.
I searched the internet for similar issues, seems like there are more account integrations having the same problem.
Anyone else is facing the same issue?

I am having the same issue… I went back and checked all my project configuration and HA config files and everything seems fine.

I am able to click on the integration from google home, add my creds and OTP, but it then fails

Any luck i have had to restart this bit as it was working but then it seemed moving to Cloudflare broke it now i am back to the original point where i could not get it to link as you have described