Error 400: invalid_request connecting to Google

I have a backup job running on a Synology NAS that backs up to Google Drive which reported as failed a couple of days ago. I have tried running a Data Integrity Check but this also fails with the error shown below:

I have tried to refresh the destination within the backup set but when it opens the page to authenticate with Google it shows access is blocked.
This link Error screenshots shows the errors that are shown. (I’ve had to link to Google Photos as I can only embed a single image into this post)

Can you please advise how to resolve this error.



Our NAS module needs updating on your NAS and will be ‘cluster specific’. Please email with the backup account ID, so we can identify the cluster name and send you the link.