I know this is out of date, but I've just stumbled across this thread.

"The Actions on Google Console is deprecated. As of December 2024, all smart home projects that were set up in the Actions Console have been migrated to the Google Home Developer Console" - ref. https://developers.home.google.com/cloud-to-cloud/project/migration

So try looking here https://console.home.google.com/projects - I had an issue creating an action which support suggested was a browser caching issue. So do please try clearing caches etc.