Add comments to portfolio items

To enable comments on portfolio pages, you need to change the  single-portfolio.php. Simply copy it and put it into the child theme (and continue using the child theme, don't modify theme core files in order to be able to update with ease in the feature).

Paste this code in that file right before the end of the article (like below):

[ .... ]

    <?php if( comments_open() ) {
            comments_template( '', true );
    } ?>
</article>

[ .... ]