F1 Feedback Reminders

I am trying to find out how to get an F1 Feedback Reminder to stop sending reminders "emails".  I was told that the trainee even went in and completed the feedback so it would stop sending the reminder, but it hasn't.  I do believe I have sense edited the instance on the course that keeps sending the reminder out on so there is no way for me to manually go in and stop it.  Any help would be appreciated.  Thanks!