Why has the exchange been shut down when it was running that well? You are a brand new member here on bitcointalk and I dont really believe that you own a bitcoin exhange - unless you prove it by telling us the name if the exchange.
Although popular but it shut down because it couldn't gain momentum with market makers and lack of volume.
This is a tricky one, I can't publicly shout the name out or use my actual account. But think about it why do I need to make this post and waste my (and other people's) time. I can reveal more info in private and message from my old account if interested as long as there is a promise of discretion.
Hope you understand.