Do you remember or have the Recovery Key? If you have it, is quite easy to access your account, If not you can try following this steps:
This method will guide you to buy a new Recovery Key, so the letter with the code will be sent to the adress you set in your account information. If you set a fake or wrong adress, it will be impossible to recover your account, but you can try by sending mails to cipsoft.
1. Official Website - Account- Lost Account
2. Write a character name.
3. Then select the option of your situation,
4.
5. The next step you need to write the new e mail adress you want for your account.
6. Buy a new recovery key