Nested collection not showing up on site

Hi guys. I’m trying to implement f’insweet’s nested collections code on my site and due to some reason it doesn’t show up in the staging site. Here’s the site: https://preview.webflow.com/preview/poocho-sep-2020…

Link to f’insweet documentation: https://www.finsweet.com/cms-library-beginner/nest/

Could you help me understand what I’m doing wrong? Thanks.

Link to staging site: https://poocho-sep-2020.webflow.io/insights-and-analysis