I knew something was up with them. But did you try contacting their customer support? Maybe they have few conditions for the referral system.
thnok Reviewed by thnok on . Duckload.com cheats with referral system! in past 2 week, almost 15 users joined using my referral link, but none referral is being showing under duckload.com >> partner area >> partner notification. so what can i say about it? Rating: 5