It worked for me, I could live with the fact that I only found the Duplicati-created folders when searching Gdrive, yet not when explicitly stepping down the drive folder tree.
The long story :
Since March 18 Google drive behavior changed and all my backup’s don’t work anymore. (Duplicati can’t find file/folder anymore it once created, must be related you @kenkendk ‘s statement “…only give Duplicati permissions to see/touch files it has created itself.”) I’ve seen no other option than redefining all backups again.
The sorter version:
I prefer seeing what I get – and would like to “want Duplicati to have full access to your Drive” and use the exact filepath I specifiy and I see. Yet, me being a newby with google drive, cannot find the “button “Google Docs” (…) on the OAuth handler page”