My Checkout is redirecting to http://www.amazon/gp/aws/cart/add.html with no .com at the end of amazon

If upon the checkout process you are redirected to http://www.amazon/gp/aws/cart/add.html without any domain (.com .co.uk .es etc.) then you will have to change your External server country detection found in WooZone -> Configuration -> Amazon config -> Plugin SETUP: