That means the shortcode is probably not registered at that time of execution. Maybe a solution with a custom code may work, but I cannot guarantee that either.
Try adding this custom code to the functions.php in your theme/child theme directory. Before editing, please make sure to have a full site back-up just in case!
add_filter( 'asp_results', 'asp_force_execute_shortcodes', 10, 1 );
function asp_force_execute_shortcodes( $results ) {
foreach ($results as $k=>&$r) {
if ( isset($r->post_type) ) {
$r->content = apply_filters('the_content', get_post_field('post_content', $r->id));
}
}
return $results;
}