Compatibility with Echo Knowledge Base?

We use the Echo Knowledge Base plugin, which creates an ‘epkb_post_type_1’ custom post type. I want to remove all capabilities for this post type from Editors.

I’ve opened the Capabilities page and see the Unique Capabilities for Post Types section on the right sidebar. However, the ‘epkb_post_type_1’ post type isn’t listed there.

How can I remove capabilities for this post type?

Thanks!

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