As documentation explains google drive refresh tokens expire after 7 days in "test" apps.
As I indeed is it necessary to publish the app to have a persistent token.
However in the documentation verification requirments explain that the use I'm doing could be considered an exception that does not need to be published/verified.
In fact, my need is to connect to my personal google drive to list folders and files on my website. Just form me and my webserver, anyway 1 user.
How to go ahead with a persistent token?
#UPDATE
Currently, my project is stuck. It seems to be moved in production but there is more action I should do. It asks me to "Comply with domain verification requirements Ensure your application's domains have completed the Search Console verification process". The domain is fully verified in the search console but I still have this message and tokens keep valid for 7days only.

