No products in the cart.
I just purchased this plugin, installed it and clicked activate. I get this message:
Fatal error: Cannot redeclare class USPS_WooCommerce_Shipping in /home/demo/public_html/wp-content/plugins/usps-woocommerce-shipping/usps-woocommerce-shipping.php on line 23.
This error usually appears when you have both basic and premium version installed
Kindly delete the basic version of the plugin and then install the premium version.