I have no idea what the template or process for creating an ad is like but it seems that they should have a simple process for listing/linking to required products. Daz ads have a "View required products:" section. That would seem to be a simple and basic requirement for a store. If after all the upheaval and redesign they don't have something like that then IMO, it is more a shortcoming of their design than the merchants.

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken