https://bitcointalk.org/index.php?topic=497545.0Theymos said that the only acceptable way of proving ownership is through signing a message. Just try your best to find a way to sign a message to your BTC address and also you can use the address that you used in your trades or you'd pmed.
I very rarely recover accounts if you can't prove ownership as described above. There are alternative ways of proving ownership, but they take too much time. If I point you to this thread, you can't prove ownership properly, and then I ignore your future PMs, this means that I'm not going to recover your account. Create a new one.
It could be tricky and chances that you can recover your account is low. Hoping that you will recover it!