This keeps happening for a specific product. the customer can't proceed to final payment stage. I have deleted the product and re added it exactly the same way as other products that work. I have logged in as a test customer and the same thing keeps happening. I add a different product to the cart and the carrier appears. I have gone throughout the site to try figure out the issue but am at a loss. All my products are basically set up the same with delivery within South Africa. Help.