it seems that this site is paying few members to show their creditworthiness.if it is honest site u will be paid though u may withdraw from your any ip address?did site put that condition when u invested money that u cannot withdraw from any other ip address?in e-currency also one can withdraw from any ip address.
Finally, they replied to me about my unusual ip address and said will be processed soon, so I'm waiting for the amount to be credited in my LR account. Now I also feel WOIP is trustworthy.