Product Category page with grouped products

Hello,

We have an E-commerce site using Woocommerce, and it’s been live for a few weeks. The client wanted more specific category differentiation from the home page. You can see if you go to Smithhonig.com/shop we have all of our category images. These are hard coded to go to …/product-category/art/metal etc. But all of our products are grouped. For instance, each print has options on metal, canvas, leather and wood. These individual materials/products are linked to groups named for each pattern. So if you click the image for the African Paint print it has all of the materials listed underneath.

If you click on Metal from the shop page, it lists every pattern but those images go into the full product group, for all materials.

We currently have every material correctly linked to its product category but they’re not showing up. WE want to get it to where the groups still exist, but if you click on that Metal image it shows the group with ONLY the metal products contained.

Thanks for any help