Easily see the date and time of your last Google sync at Tools - Sync Google Calendar
From here you can see when the last sync happened, you have the option to "Run Sync" to update all new changes since your last sync or click on "Run full sync" Which will update everything from the last 4 months.
This changes might take sometime to update back on both softwares so after connecting for the first time or running a sync we recommend waiting 20-30 minutes to see those changes update on both ends.
This feature will only impact the calendar syncing to ISN and will not reflect information regarding Google Drive backup.
If you have any questions, please feel free to give us a call at (800) 700-8112, or you can email us at firstname.lastname@example.org or open a chat in the upper right corner of your ISN!