bbPress.org

Hi everyone, I need help, so I am appealing to the community.
I spent many hours trying to fix this display, but I can not.
Version of WordPress: 4.0
Version of bbpress: 2.5.4
Template: WP-Critique

I can not be specific to the forum sidebar to the racine, but I have elsewhere (subjects, answers …).
Here is my forum http://www.googland.fr/forums/
I carefully followed the help provided on https://codex.bbpress.org/step-by-step-guide-to-setting-up-a-bbpress-forum/ (part 8), I have certainly misunderstood.

I created my bbpress.php based on page.php, here is the code.

<?php get_header(); ?>

	<?php global $wp_query; $postid = $wp_query->post->ID; ?>

	<div id="page" class="clearfix">

		<div id="contentleft">

			<?php if ( get_post_meta( $postid, 'post_featcontent', true ) == "Narrow Width Featured Content Slider" ) { ?>
				<?php include (TEMPLATEPATH . '/featured-narrow.php'); ?>
			<?php } ?>

			<?php if ( get_post_meta( $postid, 'post_featgalleries', true ) == "Yes" ) { ?>
				<?php include (TEMPLATEPATH . '/featured-galleries.php'); ?>
			<?php } ?>

			<div id="content" class="maincontent">

				<?php if ( function_exists('yoast_breadcrumb') ) { yoast_breadcrumb('<p id="breadcrumbs">','</p>'); } ?>

				<?php include (TEMPLATEPATH . '/banner468.php'); ?>

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

				<div class="post clearfix" id="post-main-<?php the_ID(); ?>">

					<div class="entry">

						<h1 class="page-title"><?php the_title(); ?></h1>

						<?php if ( get_post_meta( $post->ID, 'video_embed', true ) ) { ?>
							<div class="single-video">
								<?php echo get_post_meta( $post->ID, 'video_embed', true ); ?>
							</div>
						<?php } ?>

						<?php the_content(); ?>

						<div style="clear:both;"></div>

						<?php wp_link_pages(); ?>

					</div>

				</div>

<?php endwhile; endif; ?>
				
			</div>

			<?php include (TEMPLATEPATH . '/sidebar-narrow.php'); ?>

		</div>

<?php get_sidebar(); ?>

<?php get_footer(); ?>

Can anyone tell me how to edit the file and what I have to put into it.
I would be very grateful for help.
Thank you