Totaly broken gun after few minutes...

Hello.
I bought some GP crates. I won K2 for 7 days. I played like 7 minutes with it. My game ended and I entered Storage to find out my K2 is fully damaged and I need 10.000gp to repair it.
This happened to another gun from crates before as well.
Z8 Support keeps telling me its no bug...

So - why do they put there that guns from crates are for 7 days??