I checked a couple of your votes and noticed that you were voting at 1% voting power. Not sure, but I think I read somewhere that the script they're using has a 50% minimum threshold. Although, if that's the case, they should include that requirement in the main body of their posts.

Update: I just checked the most recent posts at @steembets and @thegame, and they both say: "Rules: Vote (100%+) on the main post and vote on only one of the up or down comments." Do you have any examples where you voted with 100% of voting power and didn't get paid?

Update 2: Regardless of whether there was a miscommunication with regards to the rules on voting percentages, I still think it would be a good idea for someone to act as an independent auditor for these games.. I also commented as such on @mrosenquist's post: Betting Games on Steemit Need Rules