MP – Shipping information not saving for anonymous users

The shipping information is not saving for customers who are not logged in. For customers who have an account, the shipping information carries from the shipping page to the confirmation page just fine. For customers who are not logged in, the shipping is not calculated and is not shown in the review below the cart.

The site is: and the single product purchase page is at:

This is a critical problem for us as we would like to go live ASAP.