It is possible to display products from WooCommerce in any Shopr widget/shortcode.
WooCommerce products in a widget
When setting up a Shopr Carousel widget, simply select the WooCommerce Product Category from this option:
WooCommerce products in a shortcode
To include products from a WooCommerce category in a shortcode, simply add a "wc_category" value. For example, the following will show products from a category in WooCommerce named "books". The value should be the "slug" of the product category as shown below:
After getting the category slug, you can use it in your shortcode.