From your conditions:
"Minimum Posts: Minimum 30 Posts per Week and
10 Posts out of 30 MUST BE MADE IN GAMBLING TOPIC (Any Thread), otherwise payments will not be made."
IMAO that's something that promotes "spam" and non-constructive posts on the forum if you're claiming for 10 out of 30 comments on Gambling section with your service on users signature.
Dunno, but you can reconsider it…