I never had any problems receiving payments from SugarCash.com (BTW, they re-branded from SugarDVD.com to SugarInstant.com). As a matter of fact, I still receive small checks from them every month:
Back in the day I used to make a shitload with them, then the "tubes came" and... (you all know the story).
I don't know how you are promoting them but if you are using terms like "The Nextflix of Porn", "Porn Netflix" etc. you won't don't get paid because that's against their TOS.