The Recommendations offered have been somewhat out-of-date (as a result of variations produced to google and payapl sites), but support for this module is very good. Also Be certain that in Just about every and every folder in the HTML Module, there is a file named ‘index.php’ having underneath code: https://www.presta-addons-modules.com/en/free-modules/prestashop-scroll-to-top-of-page-move-on-a-page-from-bottom-to-top.html