You need to get more referrals... that is clear. And those referrals have to make some money fo you so if you force people to signup just to make you happy and they dont work than you get nothing.
I dont like this PTC or what ever is it. Get rid of it... there are much easier and more logical ways how to make money online.
Make a website review there products you like and where is high affiliate commission get SE traffic and you will get more than few dollars.