Restore Deleted Event

To restore a deleted event, first navigate to your Dashboard, where you should see a panel called "My Follow Up" - one of the lists on this panel is the "Events Deleted In The Past 7 Days" list.   Click on this and you should see your deleted event.  Clicking on the event in question will restore it back to the calendar.

This image shows you the panel on the Dashboard

Click on the Expand icon, and then click on the deleted event to restore.   If you do not see the Panel, while viewing the Dashboard, click on the Dashboard Settings Cog icon, top right of screen and choose to view the My Follow Up panel on your Dashboard.