[cguZZMan]

A new release is in the repository. Version 1.1.0.
If anybody had an issue, please check if is resolved now.

The source mode should be working fine now. If you use the source mode to add your videos to the library, the scanning for new content should work as expected now and no more stucks. Artwork should work too. If somebody has an issue, post the debug log with your message.
The default source mode port has been changed to :8587. So the URL you should use is http://localhost:8587/source
The old port 8585 is still working only for compatibility, but what that port will do is to forward your request to the correct port 8587. That will create unnecessary requests to the server and will kind of slow your scanning process.
I strongly recommend updating your library to the direct port. You can change this port in the settings. A Kodi reboot is required after the change.
So this is the port mapping for my addons as of now:
Port 8585 <- Deprecated (Used as a forwarder to the correct port. Will be removed in the future).
Port 8586 <- Default port for the OneDrive addon.
Port 8587 <- Default port for this Google Drive addon.

Again, if you have an issue post always your message with your debug log file. https://kodi.wiki/view/Log_file/Easy

You can get this version if you have my repository installed: https://github.com/cguZZman/repository.plugins
Or you can wait for the update in the Kodi Repository (already submitted).