Help me Modern ACC Shop error.

[fera holy kina]

speak when I buy this error.
I tried several ways to get used various modern revs all of this error someone help please

03:00 Sorry, you don't have a container to receive >> Crystal Coin <<

 

[johanivarsson]

buump, have the same prob

 

[Wesker]

you need a backpack in your set o.0

or space..... (cap)