My WooCommerce Product Table isn’t loading – I just see a shortcode or blank screen

I have installed WooCommerce Product Table plugin and it’s not working on the support site it says “If the shortcode is appearing on the page but isn’t showing a product table then there’s almost certainly a problem with your license key. The product table will only load when you have a valid and active license key” and the version of the plugin I have is 2.1.3 and 2.1.4 is already out. Please reply to my questions I have asked a lot of previous question on which I have gotten no response?