happy to help here. Unfortunately, the link you shared with us is for your eyes only, and we are prompted with a login screen.
Without any screenshots or anything, it's hard to know for sure how the content of your site is set up. Usually, content can be edited with the Website/Landing Page builder instead of the Design Manager. I can also imagine that either a blog or a HubDB is driving the content on this page, as it looks dynamically created.