Referee Assignments If you are a referee and would like to be scheduled for UFA matches, please see the information under "How to Get Assigned". Referee Payment All referees are required to submit a W-9 form. Click here to download the form. Please mail the form to United Futbol Academy, PO Box 1168, Cumming, GA 30028, or fax it to (844)-468-6832. You will not receive a paycheck until UFA has the W9 on file.