'Leave a comment' not working in Chateau v 2.0.2

Hi there,

I’m a fellow newbie to wordpress and coding. I recently upgraded to the most recent Chateau template version 2.0.2 which is great but I’m having real problems changing the text in the comment box which currently says ‘0 comments’ which I’d like to replace with ‘Leave a comment’. I have tried everything and nothing seems to work. Any pointers in the right direction would be hugely appreciated thanks.

<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>

	<div class="post" id="post-<?php the_ID(); ?>">
		<div class="postTitle">
			<h2><?php the_title(); ?></h2>
			<p class="postDate">
				<strong><?php the_time('d'); ?></strong>
				<em><?php the_time('l'); ?></em>
				<span><?php the_time('M Y'); ?></span>
			</p>
			<div class="postInfo">
				<p>Written by <?php the_author(); ?> in <?php the_category(', ') ?></p>
				<p class="postComCount">
					<strong>≈ <?php comments_popup_link( 'Leave a comment', 'Add another comment', '% Comments', 'comments-link'); ?></strong>
				</p>
			</div>
		</div>
		<div class="postContent">
			<div class="postExtras">
				<p><?php edit_post_link('[Edit this article]', '', ''); ?></p>
				<p><strong>Tags</strong></p>
				<p><?php the_tags('',', ',''); ?></p>
				<p><strong>Share it</strong></p>
				<ul>

This is what the coding is saying, as you can see I’ve changed it already but it hasn’t come into effect on my site http://www.chaiwiththecosmos.com