Run through the following steps in order to refresh your Google Calendar Sync with Yesware: 

1. Navigate to your Salesforce Preference page with the App Site (HERE) and Disable the "Calendar Sync" option:

2. Refresh your Gmail.

3. Open your Google Calendar in a separate tab/window (rather than just the sidebar).

4. In the upper right-hand corner, select "Yesware" > "Deactivate."

5. Navigate to your Salesforce Preference page with the App Site (HERE) and Enable the "Calendar Sync" option.

6. Refresh your Gmail

7. Open your Gcal in a separate tab/window (rather than just the sidebar). In the upper right-hand corner, select "Yesware" > "Activate."

​This should fully enable your Google Calendar to sync with Salesforce.

Please reach out to Yesware Support if you run into any issues with this process.