MarketPress Add to Cart not working on mobile

Hi Gurus,

I just tried testing my shopping cart functions on mobile and noticed the "Add to Cart" button added through the single product shortcode does not add the item to the shopping cart, instead it redirects to the Cart page.

I just tried the "Add to Cart" button on the default Products page, and that button worked as expected. So I'm guessing the problem is that I have used the single product shortcode four times on one page?

Is there a workaround that you can recommend?