On the product page, where it says "Price as configured $69.99" I entered the Qty: 3, then clicked on "Add to Cart". I then clicked on "Checkout" and I continued to process the order until they wanted me to enter my payment information. I never got any message or error about selecting an option or configuration. Maybe something is stuck in your browser cache. Try using a different browser (if you have that option), or flush your cache and see what happens.