you write a ticket. category = other, game = a.v.a in English, character name = 4Dew, subject = my ijji account 4Dew
in subject write your situation. also write your Facebook email (the 1 you had when you created that account).. because you created your account with facebook, the email was set to your facebook email back then. also open google, write "what is my ip address" and write your IP address too. this way they can be sure the account is yours. if you have any screenshots, then upload them to postimage or photobucket (or any other photo hosting site) and post the link to the gallery. from 2 to 5 screenshots should be enough. also it helps if you write them what weapons you had in your inventory.
also tell them where do you want them to link your ijji account, to which aeria games account.
with this they should be certain the account is indeed yours and they'll link 4Dew to 1 of your Aeria Games accounts. they also might ask for more information first.