At Snappic, we like to keep the ads fresh! Snappic will always choose the image that was posted most recently when deciding between a number of posts tagged with the same product.
For example, if you tag a t-shirt in both a post from today and a post from yesterday, then Snappic will use the post of the t-shirt from today in your retargeting ads.
Find out more about our tagging feature, and read this article about the best practices for tagging Instagram images.