"Device invalid" error trying to open Google Drive remote files with LibreOffice

Premise: I have never used LibreOffice's remote access option before - I just discovered it today and I think it might be very useful for me: I don't know how (nor whether) it works.

I'd like to access my files on Google Drive with LibreOffice. I have never done that before, so I must add my account to LibreOffice.

I'm trying to do that with File > Open remote... > Manage services > Add service. I fill the form with my username and password and hit OK:

Now LibreOffice asks for a "6 digit PIN" (good, I use 2FA, looks like it successfully connected to Google's server):

But when I enter my PIN and hit OK again I get an error saying that "The specified device is invalid":

I supposed it was related to the login process, so I tried to combine

1. my username with and without the "@gmail.com" suffix, and
2. the "normal" and an "app-specific" password I created ad hoc (https://support.google.com/accounts/answer/185833?hl=en)

but LibreOffice keeps resulting in the error. How can I solve this?