As requested in this Support Thread (http://woocredits.supportico.us/threads/enabling-shipping/), we added an immediate fix to allow for Simple Products to be purchased with Shipping information available upon checkout. To use this immediate, short term fix for Simple Products:
1) Enable Free Shipping in Woo Commerce as shown in WooThemes documentation here: https://docs.woocommerce.com/document/free-shipping/
2) Build Shipping costs into the credit price you set for the Simple Product.
As noted above, this is an immediate, short term fix to allow sale and shipping of Simple Products. We are working on a more in depth solution that will separate the payment in credits for the Simple Product, from the payment for and collection of shipping details.