If you bought the plugin “PricingTable” from pickplugins.com you will see a license key’s for your purchased items in page License Keys or My Account page you need to logged-in to see your own license key’s.
Copy the license Key for PricingTable and go your site admin dashboard menu PricingTable » License you will see activation form for license key, paste the license key License Key text box and click Activate. you will need to connect internet to activate license key’s after successfully activate you will see response message from our server like License key activated and Status: Active
After successfully activated license key’s you will be able use plugin without any restrictions.