Download plug-in object code and put it at your /plug-ins folder then follow nopCommerce standard plug-in installation procedure to install plug-in. Universal ZipCode plug-in is available under “Misc” group on local plug-ins page. Once plug-in is installed go to your nopCommerce admin panel, and go to Configuration → plug-ins → Local plug-ins → Universal ZipCode plug-in. It will ask you to enter your license key as shown in figure below, enter license key which you received on your registered email after purchasing this plug-in from our website.