You should score 100% in quiz task and then you have to share your result to yours Facebook account .Yeah, I did tried some offerwalls but got nothing, lol. I didn't have enough experience with PTC.
I tried quiz task, but after I answers all the questions, I got nothing. Or, should I share my result to Facebook first to gain the points? I don't get it.
Just try adgate offerwall surveys ,this is working for me ,I do take surveys from this offerwall .