I respectfully disagree with essxjay. This is an appropriate forum because the main benefit of SideStep is that you can search across airlines (or hotels) and still receive the BONUS MILES for booking directly on the selected airline's Web site.

As for the original question, I suggest contacting the SideStep support center. Here's the link:
http://fe4012.sidestep.com/servlet6/...p/contact.html