MARKETPRESS INTEGRATION: mp_product.php using do_shortcode for appointments + functions

---> our logic explanation:

1 product post = 1 service provider

this website is about teachers to support school students

you search the teacher you need via the searchform in the sidebar
filtering with the courses you need, the grade and the district
(all these are custom taxonomies added to the product custom post type)

here's a product post example (service provider post)

http://tuprofe.pe/reservas/tutores/mijail-roberto-surpachin-miranda/

---> issue explanation:

We would like to instert the appointment + shortcodes in
the php file instead of using the content box in the edit-product-page
for the shortcodes.

But when we do so,
the add-to-cart button doens't appear.

It only appears when we put the shortcodes in the content box.

Here's the mp_product.php file.

Thanks for the support

************mp_product.php***********
<?php
/**
* The Template for displaying all single posts.
*
* @package WordPress
* @subpackage Twenty_Ten
* @since Twenty Ten 1.0
*/

get_header(); ?>

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

<div id="contenedor" class="tutor">

<div class="imagen">
<?php the_post_thumbnail('medium'); ?>
</div>

<div class="ficha-de-tutor">
<div class="titulo">
<?php the_title(); ?>
</div>
<div class="contenido">
<?php the_excerpt(); ?>

</div>
</div><!-- .resumen -->

<div id="reserva">

<div class="titulo">
Haz tu reserva:
</div>
<?php
//para sacar el ID del tutor que esta grabado como custom field
$post_id = get_the_ID();
$trabajador = get_post_meta($post_id, 'id_tutor', true);
//echo $trabajador;
?>

<?php //echo do_shortcode('[app_services]'); ?>

<?php //echo do_shortcode('[app_monthly_schedule worker="' . $trabajador . '"]'); ?>

<?php //echo do_shortcode('[app_confirmation]'); ?>

<?php the_content(); ?>

<?php mp_buy_button(true, 'single'); ?>

</div>

</div><!-- #contenedor-->

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

<?php get_footer(); ?>