Theme’s single-post page doesn’t show full post

I’m trying to work with this template here:
https://totalwp.com/alevero

For a paid template, it’s really a pain in the ass. You can see in the live demo that there’s an inherent problem in the code — the single page doesn’t open up the full post!
https://www.templateaccess.com/wpdemos/wp18/?p=46

My site’s not live right now because the client has requested it to be hidden. But I haven’t changed the source code from the download and I have the same exact problem as what you see in the live demo. Here’s the code for the single page:

<?php get_header(); ?>

  <div class="body">
    <div id="columns">
      <div id="centercol">
        <?php $urlHome = get_bloginfo('template_directory'); ?>
        <?php if (have_posts()) : while (have_posts()) : the_post(); ?>
        <div class="box post" id="post-<?php the_ID(); ?>">
          <div class="content">
            <div class="commets"><a>" title="View Comments"><?php comments_number(0, 1, '%'); ?></a></div>
            <!--/commets -->
            <div class="post-title">
              <h2><a>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>">
                <?php the_title(); ?>
                </a></h2>
            </div>
            <!--/post-title -->
            <div class="social-links">
              <div class="post-date">On <?php the_time('m.d.y'); ?>, In <?php the_category(', ') ?>, by <?php the_author_posts_link(); ?></div>
              <div class="clr"></div>
            </div>
            <!--/social-links -->
            <div class="clr"></div>
            <?php $postimageurl = get_post_meta($post->ID, 'post-img', true); if ($postimageurl) { ?>
            <div class="pic fl"><a>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><img src="<?php echo $postimageurl; ?>" alt="<?php the_title_attribute(); ?>" /></a> </div>
            <?php } ?>
            <!--/post-img -->
            <div class="post-excerpt">
              <?php the_excerpt(); ?>
            </div>
            <!--/post-excerpt -->
          </div>
          <!--/content -->
            <div class="clr"></div>
          <div class="content">
            <div class="post-author">
              <div class="pic fl"><?php echo get_avatar(get_the_author_email(), $size = '80', $default = $urlHome . '/images/default_avatar_author.gif' ); ?></div>
              <div class="author-descr">
                <h3>
                  <?php the_author(); ?>
                </h3>
                <p>
                  <?php the_author_description(); ?>
                </p>
                <div class="author-details"><a>" target="_blank">Visit Authors Website</a> &nbsp;|&nbsp; <a>/author/<?php echo strtolower(get_the_author_nickname()); ?>">All Articles From This Author</a></div>
              </div>
              <!--/author-descr -->
              <div class="clr"></div>
            </div>
            <!--/post-author -->
          </div>
          <!--/content -->
          <div class="clr"></div>
          <div style="padding:5px;">
            <div class="fl" style="padding:5px;">If you enjoyed this article, please consider sharing it!</div>
            <div class="fr"><a>&title=<?php the_title(); ?>" title="Bookmark at Delicious" rel="nofollow" target="_blank"><img src="<?php bloginfo('template_directory'); ?>/images/ico-soc1.gif" alt="Icon" /></a> <a>" title="Bookmark at Mixx" rel="nofollow" target="_blank"><img src="<?php bloginfo('template_directory'); ?>/images/ico-soc2.gif" alt="Icon" /></a> <a>&title=<?php the_title(); ?>" title="Bookmark at StumbleUpon" rel="nofollow" target="_blank"><img src="<?php bloginfo('template_directory'); ?>/images/ico-soc3.gif" alt="" /></a> <a>&title=<?php the_title(); ?>" title="Bookmark at Digg" rel="nofollow" target="_blank"><img src="<?php bloginfo('template_directory'); ?>/images/ico-soc4.gif" alt="Icon" /></a> </div>
            <div class="clr"></div>
          </div>
          <!--/social-links -->
          <div class="clr"></div>
          <!--/box -->
          <div class="post-rel">
            <div class="content">
              <div class="subcols">
                <div class="col1">
                  <h2>Related Posts</h2>
                  <div class="clr"></div>
                  <?php
					$results = $wpdb->get_results(yarpp_sql(array('post'),array()));
					foreach ( (array) $results as $_post ) :
					$_post = get_post($_post->ID);  ?>
                  <div class="th fl"><a>ID); ?>"><img src="<?php echo get_post_meta($_post->ID, 'post-img', true); ?>" alt="" /></a></div>
                  <div><a>ID); ?>"><?php echo $_post->post_title; ?></a></div>
                  <div class="hlr"></div>
                  <?php endforeach; ?>
                </div>
                <!--/col1 -->
                <div class="col2">
                  <h2>Popular Posts</h2>
                  <div class="clr"></div>
                  <?php
					foreach ( (array) taccess_popular_posts() as $_post ) : ?>
                  <div class="th fl"><a>ID); ?>"><img src="<?php echo get_post_meta($_post->ID, 'post-img', true); ?>" alt="" /></a></div>
                  <div><a>ID); ?>"><?php echo $_post->post_title; ?></a></div>
                  <div class="hlr"></div>
                  <?php endforeach; ?>
                </div>
                <!--/col1 -->
                <div class="clr"></div>
              </div>
              <!--/subcols -->
            </div>
            <!--/content -->
          </div>
          <div class="clr"></div>
          <!--/box -->
          <?php comments_template(); ?>
        </div>
        <?php endwhile; else: ?>
        <p>Sorry, no posts matched your criteria.</p>
        <?php endif; ?>
        <div class="clr"></div>
      </div>
      <!--/centercol -->
      <?php get_sidebar(); ?>
      <div class="clr"></div>
    </div>
    <!--/columns -->
  </div>
<!--/body -->
<?php get_footer(); ?>

Help, please!!!!!