Don't get the wrong impression here, but I'm just wondering why you guys are using a secondary domain hosting and not having your own? It's not that I'm against Yolasite or using their service, but in my opinion, seeing a lottery or something related to money-making schemes without a personal domain is sort of fishy to me. It makes me think that the people behind these kinds of sites have no money to even buy a personal domain and they're using secondary hosting sites just to promote Ponzi.
Anyway, I suggest you check Investor-based games in this forum and see what I'm talking about.