With Prestashop Social messenger addon, a store operator can choose the pages on which he wants to Display screen this social messenger. At the time I choose them I clic "Delete picked" seems the error "An error happened whilst deleting range." and absolutely nothing is deleted. With Prestashop Advance Product Attribute/Discipline, https://www.presta-addons-modules.com/es/free-modules/prestashop-preloader-page-loading-image-page-loading-animation-preloading-screen-loading-page.html