Wiki Discussion not showing

HI there

I've searched the forums and tried various options to try and get my Discussions showing on my wiki.

Comments are enabled on the site, and comments are enabled on the wiki page.

I also tried adding the following code to page.php as suggested on this post https://premium.wpmudev.org/forums/topic/wordpress-wiki-discussion-does-not-work#post-81636

<?php if ($post->post_type != 'page' && comments_open()) comments_template(); ?>

The site in question is http://1two3.co.za/geography/geogwiki/virtual-tours/durban/durban-residential/?action=discussion