piscinafacil

Thank you, but I managed to solve the problem by inserting the feedback component in the visual composer.

Adding this code in the functions.php:

// Cria um shortcode comum
function my_custom_page_comments( $atts, $content = null ) {
	return comments_template();
}
add_shortcode('my_custom_page_comments', 'my_custom_page_comments');

// Associa o shortcode acima com o visual composer, para que ele vire um componente selecionável na edição
vc_map( array(
	"name" => "Comentários de página",
	"base" => "my_custom_page_comments",
	"content_element" => true,
	"icon" => "icon-wpb-toggle-small-expand",
	'category' => 'Content',
) );