Problem charging nx. :(

[Imitazion]

Herro, I recieved a 5k code yesterday, and I wanted to charge it today.
I got a error i've never seen before.
wat eez dis 8(
http://i43.tinypic.com/2iqermp.png

[Reflexx]

says the code is wrong

[Maske]

You most likely just inputted a wrong letter or something; retype it and it should work.
I had that error once but I just had to try it again.

[Imitazion]

I retyped it 4 times, no success. ;;