Theme 100% supports WooCommerce plugin. Install and activate the WooCommerce plugin from WP.org repository: https://wordpress.org/plugins/woocommerce/
To setup the plugin go to WP Dashboard – WooCommerce – Settings
To setup WooCommrece display go to Customizer – WooCommerce
Popularis PRO comes with dozen of WooCommerce options and features. With this addon you can customize colors, fonts, layouts and more. It adds features like ajax add to cart, off canvas filter sidebar, image flipper or gallery images on shop pages.