Custom Post Types and Comments / Jetpack

The problem I am trying to address is that I have created a Custom Post Type (Projects), and I need to incorporate the Jetpack Related Posts functionality at the bottom of each Projects post, in the same manner that it appears at the bottom of each standard Post.

I also find that I cannot get comments to be open on my Custom Post Type (Projects), even after trying nearly a dozen different suggestions online. Can you please assist me? I have already activated the support access for the site (