Adding Shortcode add 5 fixed posts before "Load More" button

Hello,
very nice work !

But when not using your plugin my front page is like this :

POST 1
POST 2
POST 3
POST 4

PAGE 2 / 3 / 4

When adding this code to my template

<? echo do_shortcode('[ajax_load_more post_type="post" repeater="default" transition="fade" offset="4" button_label="Chargement des articles"]');?>

just brefore the pagination code, it becomes like this :

POST 1
POST 2
POST 3
POST 4
POST 5
POST 6
POST 7
POST 8
POST 9

LOAD MORE

What’s wrong please ? (I wanted only 4 posts on my webpage before loading more)

Thank you.

Template is :

<?php
			$thumb = get_post_thumbnail_id();
			$img_url = wp_get_attachment_url( $thumb,'full' ); //get full URL to image (use "large" or "medium" if the images too big)
			$image = aq_resize( $img_url, 740, 430, true ); //resize & crop the image
		?>

		<?php if($image) : ?>
			<a href="<?php the_permalink(); ?>"><img class="postimg" src="<?php echo $image ?>"/></a>
		<?php endif; ?>		

	<header class="entry-header">

		<h1 class="entry-title">>>&nbsp;<a href="<?php the_permalink(); ?>" title="<?php echo esc_attr( sprintf( __( 'Lien vers %s', 'fabthemes' ), the_title_attribute( 'echo=0' ) ) ); ?>" rel="bookmark">
<font color="#DF1011"><?php the_title(); ?></a></h1></font>

	</header><!-- .entry-header -->

	<div class="entry-summary">
		<?php the_excerpt(); ?>
	</div>

https://www.ads-software.com/plugins/ajax-load-more/