Replays won't prove anything. Many people can share the account. Now, what I recommend is that you submit a support ticket as well as messaging [GM]Saiden on the Z8games forums.
The information should include the following:
1: Account name
2: Who you gave the password to.
3: Payment stubs (Paypal transaction number if you payed via that, UGC card number if you payed via that, and etc.).
4: Prior passwords
5: Additional information such as "i don't know my e-mail , security question , my IP is dinamic so it don't fit"
Good luck, and I hope you can recover your account!