Need help to get my old account :)

maaany years ago (probably around 10 years) i played 2moons. But i quit. So 1 or maybe 1,5 years ago, i created a Dekaron Account. There was an event where u get a free Level ~100 Character. 

Now i tried every logins i know, but i cant login here or on the site called nexon...

I dont wanna play from lvl 1, can someone help me to get my old account back ?

I dont know where i should try to reset password to check which email i used.