ACF Flexible content - basic text field

i'm working on acf custom fields with flexible content with wordpress. I'd like to make some flexible content appear, so I use the code I found on acf website.
Then I create the fields on acf, but nothing appear.

• Here is what I made on acf : the name of the fexible content
• and here are the sub fields

This is just text area and normal texte title

• here is my code

<?php /* Template Name: ateliers */ ?>


<?php get_header(); ?>






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

<?php

// check if the flexible content field has rows of data
if( have_rows('ateliers') ):

     // loop through the rows of data
    while ( have_rows('atelieratelier') ) : the_row();

        if( get_row_layout() == 'content' ):

            the_sub_field('atelier_01');


        elseif( get_row_layout() == 'content' ): 

            the_sub_field('texte_atelier');

        endif;

    endwhile;

else :

    // no layouts found

endif;

?>

<?php endwhile; ?>

<?php get_sidebar(); ?>
<?php get_footer(); ?>

</div>
</body>
</html>

Thanks for your help