Shopify pays, they always do . But now the free trial is 90 days , I think you have to wait untill client starts paying which is 90 days ?? Correct me if I’m wrong ! Convertcreator.com pays 25% monthly recurring , its similar to shopify and clickfunnels in one and it includes 60 templates .

Other programs I would recommend are bluehost, aweber, or any program that someone would use for years and has a recurring affiliate commision program, because almost their entire business is built on it.