Hello,
Ok, let’s make everything clear.
If you want to have the same prefooter as on our demo but instead of the newsletter get products tags you can use 8theme – Static Block widget in the Prefooter widget area http://prntscr.com/i4chb3
Static Block includes 4 columns< 3 of them should have product widgets and 1 - product tags. To add product widgets to static block content we used Widgetized Sidebar element http://prntscr.com/i4chxt
Every element uses its own, specially created custom widget area http://prntscr.com/i4cic3
Every widget inside this widget area has its own settings and title http://prntscr.com/i4cimp
If you want to replace any element you can edit static block and do this. WooCommerce products elements that you used to display sale, featured, new products have the different design than Products widget, so if you like the way how products are displayed on our demo use Products widget and Widgetized sidebar VC element to add it to your static block.
Regards