Well i have tried the COSS ICO bounty recently but i was a total waste got paid close to 10USD after 2 months 
maybe you ahve less followers and friends or you didn't submit your work properly. that's why you got only 10 usd.I received 2300+ coss and i sold when price was 0.26$ and earned 600$. maybe you didn't complete their rules that's why why got only 10 usd