Add to Cart Only Showing Up in Simple Products

I am running woocommerce 2.4.12 and my add to cart button is only showing up in simple products. Is there an easy fix for this? I think it is a jquery issue but I dont know which files to edit. I would like to have the add to cart button show up when I have multiple variations for a product.

https://happilynaturalday.com/product/grow-food-not-lawns-black/

Thank you so much!!