Affiliate program doesn't attract advertiser to help you promote the casino you handled and you already see that for the span of 1 year that even if you had that still the revenue of what you want to promote is not good, so maybe best to spend for another marketing options since if you just wait for other people to promote you via referral program then nothing will happen to your casino. Try to create theead then hire a signature campaign manager as other suggested then run a appealing signature campaign plus you add some sort of competition then provably you can see a better result for that.