Comments not appearing below random post php

Hi all, I’ve searched and searched to no avail.

My comments are running just fine, except on two specific pages…my category pages, and on product pages where I have some custom PHP code to display random posts. I’m at a loss as to why comments aren’t appearing on these pages, and I’m a tad miffed at myself that I can’t figure it out. Comments are turned on (as mentioned, they appear just fine on other pages), and I am using <?php comments_template(); ?>

Any help would be massively appreciated. I’m sure it’s something dumb that I’ve missed…

Here’s a link to the category page and the corresponding PHP:
https://www.tentononline.com/category/all-courses/html-css

<div id=”category”>
<h1><?php if (is_category()) { single_cat_title(); } ?> Training Courses</h1>
<?php echo category_description($category); ?>
<?php while (have_posts()) : the_post(); ?>
<div class=”product”>“><?php the_post_thumbnail( ‘single-post-thumbnail’ ); ?><?php the_title(); ?></div>
<?php endwhile; ?>
<?php comments_template(); ?>
<?php get_footer(); ?>

Here’s a link to the product page and the corresponding PHP:
https://www.tentononline.com/scratch-building-wordpress-themes-with-photoshop

<div id=”page”>
<?php if ( have_posts() ) : while ( have_posts() ) : the_post();
the_content();
endwhile; else: ?>
<p>Sorry, no posts matched your criteria.</p>
<?php endif; ?>

<div id=”youmightalsolike”>
<h1>Other courses you might like <span class=”micromicro unbold bodyfont”>(View all courses)</span></h1>
<?php
global $post;
$postid = $post->ID;
$args = array(
‘orderby’ => ‘rand’,
‘showposts’=>6,
‘post__not_in’=>array($postid),
‘cat’=> ’12’
);
query_posts($args);
while (have_posts()) : the_post();
echo ‘<div class=”product”>’;
echo ‘‘.get_the_post_thumbnail().the_title(”,”,false).’‘;
echo ‘</div>’;
endwhile;
?>
<?php comments_template(); ?>
</div>
<?php get_footer(); ?>