Nexon Cash Help

I've ordered Nexon cash and every time I press Submit this is what happens



Can any one help me to fix this...

Thank you

i think there is limit and you on that limit wait till the day it says and try again.Maybe it will work.

i think i have an idea y its not working.

1. you are buying too much nx
2. computer lagged so you probably submitted lots of charges for nx
3. nexon FAILED again

how to fix maybe:
1.wait for the time.
2.restart computer or internet and try again

Thank me if i helped XD