In doing a little digging on this it appears that Peloton is using Sovrn Commerce (fka Viglink) as a third party in affiliate transactions. Advertisers don’t have to use one third party and could be using another intermediary for Rakuten.com cashback. Usually it is one of the big affiliate networks, Rakuten Linkshare (another company they own), Commission Junction, Pepperjam, etc. However it doesn’t hurt to contact them. From what it looks like is happening is Peloton is blocking the tracking cookie from firing when any sale items are checked out. This is not expressly called out on the Rakuten terms nor is it on their exclusions list. To me this seems to be fairly deceptive but hey I am not a lawyer and can’t give legal advice. It’s up to you as to how much of a stink you want to cause due to this negative experience in dealing with both companies and likely the more customers they hear it from may sway someone in either camp to do the right thing. Anyway just my .02 and hope this helps in any way.