Plugin don`t work with certain themes?

Hi!
I cant find the plugin in the widgets list when installing it on the Divi theme from elegant themes. Thought it might be a theme issues, so I also tried it on the theme Hugo from cssigniter, and Storefront but same problem there. Have the latest Woocommerce version, 2.6.14 and even tried disableing all plugins except for WooCom offcource. Any idea whats going on? (https://demoshop.wayoutweb.net/)