OP, you are not advertising enough in this community. You can boost your audience by posting a proper announcement thread for that purpose, if you really want to attract some attention. It's your only chance of getting noticed. Also, the increased exposure will raise your audience's interest. The more you reveal, the more chance you have of convincing your audience to visit your site, or even become a customer. Look around and check out some threads from other casinos if you're not sure how it's done. That'll give you an idea of what you need to do. Another option is to hire someone to design and post a proper ANN for you.

Also consider interacting more with the community and posting useful information, answering questions, etc. that some people above already suggested. The more you do, the better. There's a good deal of competition in that market, so you'll have to do a few things right to differentiate yourself and get more attention.