Ajax Load More and conditional loop - php

Question

I am trying to set up a wordpress. For my blog page, I displayed items differently depending on the position of the article (first line) and content (quote or article with image). It does the job.
<?php $post_counter = 0; // START COUNTDOWN ?>
<?php if ( have_posts() ) : ?>
<?php query_posts('category_name=blog'); ?>
<?php while ( have_posts() ) : the_post(); ?>
<?php $post_counter++; // COUNTDOWN FOR EACH POST ?>
<!-- IF FIRST POST -->
<?php if ( $post_counter == 1 ) : ?>
<div class="first">
<?php $url = wp_get_attachment_url( get_post_thumbnail_id($post->ID) ); ?>
<div style="background-image:url('<?php echo $url; ?>')" class="fullimg">
</div>
<a href="<?php the_permalink() ?>">
<?php the_title() ?>
<?php echo get_the_date( 'd/m/Y' ); ?>
</a>
</div>
<?php endif; ?>
<!-- IF NOT FIRST POST -->
<?php if ( $post_counter != 1 ) : ?>
<!-- IF NOT FIRST POST AND IS A QUOTE -->
<?php if ( has_post_format( 'quote' )) : ?>
<div class="quote">
<?php the_content() ?>
<?php echo get_the_date( 'd/m/Y' ); ?>
</div>
<?php endif; ?>
<!-- IF NOT FIRST POST AND IS NOT A QUOTE -->
<?php if ( !has_post_format( 'quote' )) : ?>
<div class="noquote">
<?php $url = wp_get_attachment_url( get_post_thumbnail_id($post->ID) ); ?>
<div style="background-image:url('<?php echo $url; ?>')" class="fullimg">
</div>
<a href="<?php the_permalink() ?>">
<?php the_title() ?>
<?php echo get_the_date( 'd/m/Y' ); ?>
</a>
</div>
<?php endif; ?>
<?php endif; ?>
<?php endwhile; ?>
<?php endif; ?>
But now I want to integrate a load more, why I use the plugin "ajax load more". When I insert my hook into the template and the plugin integrates the shortcode, the button appears but nothing happens. Ideas ?