Well, my theme not exactly that simple. In my theme I show Page to create popup Contact Form on custom index.php by widget (for simple form edit purpose):
Widget get Page to index.php:
public function widget( $args, $instance ) {
…
<?php $page_data = get_page( $popup_page );
if($popup_header) echo '<h3>'. $page_data->post_title .'</h3>';
echo apply_filters('the_content', $page_data->post_content);?>
…
}
Code for form on that Page:
[contact-form to='[email redacted]'][contact-field label='Ваше имя' type='name' required='1'/][contact-field label='Электронная почта' type='email' required='1'/][contact-field label='Сообщение' type='textarea' required='1'/][/contact-form]
I send you site/login/password to take a look by http://jetpack.me/contact-support/.