I've registered on cpagrip,adworkmedia and these 2 networks have content locker. When I tried them to lock link on cpagrip it did not support offers in Italy,spain etc(there are a few cpa offers on the other cpa network). On adworkmedia though it has 3 or 4 offers with link locking in the same countries but all surveys(or offers) were appeared with error message so I got very disappointed with link(content) locking itself. (Location trial was done through vpn.) Is there any best link or content locking service except 2 networks that written above?