First iam sorry if this is the rong section and forgive me if it is. NO FLAME.
well a way my Friends and I get double NX and sometimes triple nx is simply below...
Step 1...
Buy a 10 dollor nexon card Or any price and take the reseat u are given buy the worked there (keep it u will need it later)
Step 2...
go home and use it on ur account.
Step 3...
go back to the store u got it from and say it didnt work for u. And i will get another card (depending on the person there he might just give ur money back and tell u to come back another day!!)
Step 4...
go home and Enjoy.
Try a third time and see if it woks again. Good luck
Tell me if this worked for u
Thank me if this worked for u!!