If you can see events on the bulletin board, but they are not appearing in edit mode, you may need to change the date range for the Event widget. The system defaults to only showing the current month, so, if you have an event set for August and it's June, it will not show up in edit mode.
To see these events:
On the Bulletin Board, click on Enter Edit Mode
Extend the To date on the Events Widget past the Event in question