"As of November 12th, 2010, Warrior Epic will no longer be serviced through ijji.com. The ijji Warrior Epic team would like to thank you for your support during this journey. As a token of our gratitude for your loyalty, we would like to reward you an ijji loyalty package. If you had registered for an ijji Warrior Epic account, you will receive an email with full details on this loyalty package. Thank you again for your support, and we look forward to seeing you in our other exciting games!"
Details of the loyalty package can be found on this thread, where ijji promises to hand out items for former Warrior Epic players if they register for GunZ or Lunia.
Warrior Epic was developed by UTV True Games, the same studio behind Mytheon and Faxion Online.