Shop page stuck in loop

Hello,

I am creating a very simpel wordpress theme for a client. And he wanted integration with WooCommerce.

Now, I have created one product and when I go to the automaticly generated shop page it generates a very long page with repeating the sentence “There were no products found matching the criteria” (translated from Dutch). As you can see here: http://puu.sh/l5Ue3/68accfe02d.png

And ofcourse it ends with:
Fatal error: Maximum execution time of 30 seconds exceeded in /home/xvilo/xxxxxxxxx/public_html/hout/wp/wp-includes/plugin.php on line 216
Which gives us more reason to believe it is stuck in a loop.

The code i use:

<?php get_header(); ?>

	<div id="full-width" class="content-area">
		<main id="main" class="site-main" role="main">

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

				<?php woocommerce_content(); ?>

			<?php endwhile; // End of the loop. ?>

		</main><!-- #main -->
	</div><!-- #primary -->

<?php get_footer(); ?>

Hope anyone can get back to me as soon as possible

https://wordpress.org/plugins/woocommerce/

EDIT:
When I go to a product (from the wp-admin) I also suffer from a 30 seconds timeout. Nohting other to display on the page tho:
Fatal error: Maximum execution time of 30 seconds exceeded in /home/xvilo/domains/experiments.xvilo.com/public_html/hout/wp/wp-includes/formatting.php on line 1013