That's one explanation.
However, I submitted a ticket over a month ago concerning join pages containing the house's 'comein' ID as the affiliate. I got a response saying it was being looked into and the ticket closed, but there does not appear to be any change.
Here's an example using a fuck team five gallery:
Starting with the first gallery link as given
http://x-fuckteamfive.bangbros1.com/...ailymoviemall/ where 'dailymoviemall' is the affiliate ID. Click through to the site, where the ID gets dropped but that's OK as long as the surfer gets cookied, right? Click through to the join page and the resultant URL is
h t t p s://st-secure.com/index.php?s=billing.payment&site=bangbros&tracksit e=fuckteamfive&productId=1&tour=t3&product=monthly
&affiliate=comein&tracker=bangbros&program=pps&referrer=http%3A%2F% 2Fx-fuckteamfive.bangbros1.com%2Fgal%2Fbbw9317-1%2Fp%2Fdailymoviemall%2F&page=other&&__utma=1.127 5669089.1364583954.1364583954.1364583954.1&__utmb= 1.4.10.1364583954&__utmc=1&__utmx=-&__utmz=1.1364583954.1.1.utmcsr=x-fuckteamfive.bangbros1.com|utmccn=%28referral%29|u tmcmd=referral|utmcct=/gal/bbw9317-1/p/dailymoviemall/&__utmv=-&__utmk=146087732
It's been well over a month, this should be fixed by now.
Depending on what promotional tools the OP was using, isn't it entirely possible that he is correct that he was not being rightly credited for referred sales?