Appeal process

My brother was accepted to University of Texas Austin on June 6th after being on wait list. He missed the enrollment deadline and admission. Was withdrawn and is now appealing. How long is the process and what are the chances he will be approved? He works fulltime for the military and just forgot to pay the $200.00 fee.

If he was on the waitlist and missed the deadline they simply moved on to the next person in line. I wish him the best of luck but I believe he is going to need it.