[block] shortcode showing up in posts section

We have section towards the bottom of our home page that pulls through , using the Otter plugin for Orbitfox.

See blog section at bottom of the page:

https://montfort.io/

Or a screenshot here:

View post on imgur.com

Instead of displaying the post titles, it displaces [block]#[/block] for each post.

How to fix this issue?

Thanks!

The page I need help with: [log in to see the link]