The Nebula Synchronizer needs to have Administrative API access to be able to load the Google Users when you are using G Suite. Contact your Google Apps Administrator and inform this person that API access needs to be enabled, see this guide. Important! The Google Administrator who is setting up the Nebula Synchronizer for the users in the G Suite environment needs to have at least the role ‘Help Desk Admin’, see this guide.
Yes! A free Gmail account is supported with the Nebula Synchronizer. Just create your Gmail account here.