Google Nest- How can I remove partial config

I tried to install google Nest. I got all the way to the end and started entering the user names and passwords, ID’s etc.

There was an error and said I couldn’t log in.
My cloud Project ID when I initially set it up didn’t have a number at the end of it.

When I went to add the Application Credentials as per the video.
The first time I logged in:
I was given the option for OAuth client ID and OAuth Client Secret.
But the next time I tried to log in, it skipped over this.

How can get into Home assistant files to reset this so I can retry and configure google nest again.

Thank you.

The authentication is stored under “Settings > Devices & Services > Integrations > 3-dots menu > Application Credentials”. From there you can delete the ones you don’t want.