Confusion on adding new Fields

Hello, I’m helping you can help me figure out how to display custom fields on the frontend. I will describe my situation thus far:

I have copied the “content below map file” template file to my theme, renamed it “schools.php” and added the line to the functions file which makes it work. This works fine. (*Note all of the below code is in my functions file in the same order posted here)

/*Add custom template and set location in themes folder*/
add_filter( 'wpsl_templates', 'custom_templates' );

function custom_templates( $templates ) {

    $templates[] = array (
        'id'   => 'schools',
        'name' => 'School Directory',
        'path' => get_stylesheet_directory() . '/' . 'wpsl-templates/schools.php',
    );

    return $templates;
}

Then I added my first custom field using the code you provide in your documentation:

/*Add the custom fields*/
add_filter( 'wpsl_meta_box_fields', 'custom_meta_box_fields' );

function custom_meta_box_fields( $meta_fields ) {
    
    $meta_fields[__( 'Additional Information', 'wpsl' )] = array(
        'phone' => array(
            'label' => __( 'Tel', 'wpsl' )
        ),
        'fax' => array(
            'label' => __( 'Fax', 'wpsl' )
        ),
        'email' => array(
            'label' => __( 'Email', 'wpsl' )
        ),
        'url' => array(
            'label' => __( 'Url', 'wpsl' )
        ),
        'tuition_url' => array(
            'label' => __( 'Tuition Information', 'wpsl' )
        )
    );

    return $meta_fields;
}

This also works, field now displays. Now I set it to save to the database…

/*Store the custom fields to the DB*/
add_filter( 'wpsl_frontend_meta_fields', 'custom_frontend_meta_fields' );

function custom_frontend_meta_fields( $store_fields ) {

    $store_fields['tuition_url'] = array( 
        'name' => 'tuition_url',
        'type' => 'url'
    );

    return $store_fields;
}

This works as well. I can save the field value, and when I reopen that store in the backend my value saved. In this case it is a web url.

So now when I try to get it to display in the frontend this is where eveything falls apart. So here is what I have:

/*Return the custom fields on the frontend*/
add_filter( 'wpsl_listing_template', 'schools' );

function custom_listing_template() {

    global $wpsl_settings;

    $listing_template = '<li data-store-id="<%= id %>">' . "\r\n";
    $listing_template .= "\t\t" . '<div>' . "\r\n";
    $listing_template .= "\t\t\t" . '<p><%= thumb %>' . "\r\n";
    $listing_template .= "\t\t\t\t" . wpsl_store_header_template( 'listing' ) . "\r\n";
    $listing_template .= "\t\t\t\t" . '<span class="wpsl-street"><%= address %></span>' . "\r\n";
    $listing_template .= "\t\t\t\t" . '<% if ( address2 ) { %>' . "\r\n";
    $listing_template .= "\t\t\t\t" . '<span class="wpsl-street"><%= address2 %></span>' . "\r\n";
    $listing_template .= "\t\t\t\t" . '<% } %>' . "\r\n";
    $listing_template .= "\t\t\t\t" . '<span>' . wpsl_address_format_placeholders() . '</span>' . "\r\n";
    $listing_template .= "\t\t\t\t" . '<span class="wpsl-country"><%= country %></span>' . "\r\n";
    $listing_template .= "\t\t\t" . '</p>' . "\r\n";
    
    // Check if the 'appointment_url' contains data before including it.
    $listing_template .= "\t\t\t" . '<% if ( tuition_url ) { %>' . "\r\n";
    $listing_template .= "\t\t\t" . '<p><a href="<%= tuition_url %>">' . __( 'Tuition Information', 'wpsl' ) . '</a></p>' . "\r\n";
    $listing_template .= "\t\t\t" . '<% } %>' . "\r\n";
    
    $listing_template .= "\t\t" . '</div>' . "\r\n";

    // Check if we need to show the distance.
    if ( !$wpsl_settings['hide_distance'] ) {
        $listing_template .= "\t\t" . '<%= distance %> ' . esc_html( $wpsl_settings['distance_unit'] ) . '' . "\r\n";
    }
 
    $listing_template .= "\t\t" . '<%= createDirectionUrl() %>' . "\r\n"; 
    $listing_template .= "\t" . '</li>' . "\r\n"; 

    return $listing_template;
}

Once this last block of code has been added if I visit the frontend of the site and use the locator no listings get returned under the map. The map still works, and if you click a marker its infowindow opens as expectged. If I delete this code from the functions things resume working as they should, but obviously the custom field I added doesnt display.

Is there anything obvious that I screwed up here? Thanks for all of your help.