The Sticky Menu is not working
The most common reason for the sticky menu not to work is due to JavaScript errors on your page. For more information on how to detect and fix JavaScript errors, please see this page:
The Sticky Menu can also conflict if your theme has built in “Sticky header” functionality. If your theme sticks the whole header (and therefore the menu), you should disable the Sticky menu functionality in Max Mega Menu. Alternatively, disable the “Sticky header” functionality in your theme, and enable the “Sticky Menu” functionality in Max Mega Menu.