[dmdsoftware]

If you are at the latest version of the plugin, try re-enrolling to ensure you are using the proper google credentials set.  Google has changed this with regards to GDPR.  

I just retried and have no problem enrolling an account.

Upgrade to regular "gdrive".  I think you may be still using gdrive-testing.  

From this repository:
http://dmdsoftware.com/home/repository.ddurdle.zip