I've configured my Google Drive after reviewing your previous posting explaining how to Create a Client ID for Web Applications, and Authorization to my Google Drive has been granted and shows in the Settings.
I've chosen Daily in the When to Backup box and Clicked Save Changes but no backups have occurred. Next Scheduled Backup and Current Date and Time show the same date and time (the time I clicked Save changes) yet no backups happen.
Is there something else I need to do to make is start backup up?
My Google Drive contains no files and the Backup.log in wp-content/backup contains nothing but headings.