I can`t use my ZP credit...

1.Why cant i buy something that costs 1300 ZP when i have 3000+ zp in my account? It says "Not enough ZP..."

2. I bought 10000 ZP and i got 2000 bonus, why they dont go in my account? I can only see them on the web site? what the hell is going on with this stupid system? nothing works properly...

In mutation mode the game crashes like 50% of the time.... Not my game... the stupid server... because after it crashes everybody is in the lobby swearing and stuff...

I will never buy ZP again...