iPad Files asks me to open GoogleDrive, and I authenticate, but still can’t access my GDrive files via Files app

That’s what I’ve been following.

When I tell it to open (access) Google Drive, it tells me that I need to authenticate through the Google Drive app. I use the link on that page to open Google Drive and my fingerprint to log into Google Drive, but when I click back to Files it says the same thing.

The solution turned out to be to open the application from the file in gdrive.