Asking for Deposit ultimate gamecard

i already buy a 20$ ultimate gamecard, when i use it, it says u have to get to level 6 to deposit, so i level up to sergent 1 which is level 6

when i deposit, it still says
In order to deposit you must be at least level 20 in any of the RPG games or level 6 in Cross Fire.

Your account does not reach the minimum level requirement to make a deposit. Please come back later. Thanks.

Company: G4BOX Inc.
Address: 885 Don Mills Road Suite 202 Toronto,Ontario, Canada M3C 1V9
Telephone: +1(416)444-4832

what happen
and i deposit on my other account before
so i am using the old way, prepaid card one