Its always depends on your rank level, mate, the higher the rank you have the higher earnings will you can make. But it seems that you're just a member rank, and members can only make a small earnings from it that only reaching around of $15 dollars per week. But if you want a bigger earnings, you can participate into social media campaigns like twitter and facebook campaign, but you have to reach the required numbers of followers on every social media accounts that you have to be able to participate.