Well, just to informed that there are some latest news regarding WOIP, and seem like currently WOIP do not allow big amount of withdrawal funds from them before everything is stable there. Anyway, i have just received another cashout of $2 today successfully.

Here is the news :
Latest News from Woip:

Dear customers,

We are glad to announce that DDOS attack is successfully neutralized. Our automatic billing system is under reconstruction at the moment.
Unfortunately, because of the disorders in Liberty Reserve working and also because of our failures caused by the hardest DDOS attack, we temporarily have to conduct all the payments in manual regime. Payments delays and temporary limitation of large amounts to withdraw are possible during next few days.
Please avoid money withdraws during these days.
Thank you for understanding,

WOIP Administration