Unable to properly configure Ajax infinite scroll plugin

@here anyone good in configuring ajax pagination from an infinite scroll plugin. These are the selectors I chose:
https://www.screencast.com/t/RtQF74CW

Here is the product site:
http://worldbusinesshouse.com/product-category/health-and-beauty-products/fragrance/womens/

It works sort of but queries the same results over and over.