You have to email Syn at firstname.lastname@example.org
and explain your problem.
I would say send the email on Tuesday, or Wednesday, but never on the weekends. Emails sent around the middle of the week seem to get answers quicker. And when you send on weekends, it takes the longest.
Be polite and patient with Syn, as she answers many emails a day. And good luck, I hope you find out what you were banned for and get unbanned soon! :3