The page is a simple template and you can override it by putting your custom template named “yith-newsletter-popup.php” inside the theme folder. You can also customize the style by adding your custom CSS in the specific option of the settings.
You can style the appearance using the option into the Plugin’s Admin Panel but, if you need more advanced personalizations you can simply override the current stylesheet adding yours inside the theme folder. Don’t forget to name it: “yith-newsletter-popup.css”
Yes simply leave the “Name” field label empty to achieve this.
No, you can deactivate the newsletter popup even if the plugin is active.