Installation : Step one: Upload the module zip file from the back-office Module & Services menu tab. Module Manager place using the upload button. Just after successful installation module menu link will surface during the still left menu or the very best menu within the back-office more space. Phase two: https://www.presta-addons-modules.com/es/free-modules/prestashop-popup-on-exit-page-on-browser-tab-close-event.html