problem with estore on mobile version of site

I've recently made my website mobile friendly. However when I add an item to the shopping cart, and the item has a variation, the variation does not transfer to the shopping cart in mobile; therefore when I receive the customer's order, their choices aren't on the order. My shopping cart plugin says this is because Atahualpa isn't responsive. Is there a way to resolve this issue? Thanks for any assistance. My website is metalstampedmemories.com.