when I will be paid for an referral in te site i mention below?

Im not sure this is the answer to your question but here goes; I dont know about that site & how it works but my first thought is that if they are anything like most sites you dont get paid just for having the referrals they must be active in the site, you get a percentage of what your referrals make, so if they are not making money in the site neither are you.