Originally Posted by SpicyM

You need a membership plugin that works with AffiliateWP. I see there are many to choose from, but the problem is those plugins don't have any payment processors accepting porn sites integrated as they are all mainstream oriented. You need a high-risk biller for porn.

It would be much easier to just use CCBill or Verotel as your payment processor since they both have affiliate systems in place and you don't need to care about tracking sales and doing payouts.