Missing “Page Options” check box

I’m using Classic editor, but i tried with Block Editor and i have the same problem.
I manage two different sites: one I updated with wordpress 5.0.3, the other not. I can therefore show you the differences that exist

See this pdf file:
http://www.camminandomontievalli.it/wp-content/uploads/2019/01/PageOptions.pdf

Plugin no for sure.
I don’t know theme. I’m using standard wordpress Twenty Fourteen

I have two pages that I want to show full-screen without sidebar.
I tried to use for them page model “Full Width Page” but nothing changes: i see always sidebar and i can’t have my contents in full screen

This is the content of full-width.php that i have in folder themes\twentyfourteen\page-templates

<?php
/**
 * Template Name: Full Width Page
 *
 * @package WordPress
 * @subpackage Twenty_Fourteen
 * @since Twenty Fourteen 1.0
 */

get_header(); ?>

<div id="main-content" class="main-content">

<?php
if ( is_front_page() && twentyfourteen_has_featured_posts() ) {
	// Include the featured content template.
	get_template_part( 'featured-content' );
}
?>

	<div id="primary" class="content-area">
		<div id="content" class="site-content" role="main">
			<?php
				// Start the Loop.
			while ( have_posts() ) :
				the_post();

				// Include the page content template.
				get_template_part( 'content', 'page' );

				// If comments are open or we have at least one comment, load up the comment template.
				if ( comments_open() || get_comments_number() ) {
					comments_template();
				}
				endwhile;
			?>
		</div><!-- #content -->
	</div><!-- #primary -->
</div><!-- #main-content -->

<?php
get_sidebar();
get_footer();

• This reply was modified 7 years, 4 months ago by Steven Stern (sterndata).

I didn’t edit at all.
I found template directly in theme folder twentyfourteen\page-templates and i tried to use it.

Now i have duplicated .php page template and i tried to change it as you said.
I selected my “Full Width Page TEST” for my page and tried again.
Now sidebar content are missing but the black band in the left side is always present so contents are not full width.

Am I wrong to set up the class?

Here is my modified .php

<?php
/**
* Template Name: Full Width Page TEST
*
* @package WordPress
* @subpackage Twenty_Fourteen
* @since Twenty Fourteen 1.0
*/

get_header(); ?>

<div id=”main-content” class=”no-sidebar”>

<?php
if ( is_front_page() && twentyfourteen_has_featured_posts() ) {
// Include the featured content template.
get_template_part( ‘featured-content’ );
}
?>

<div id=”primary” class=”content-area”>
<div id=”content” class=”site-content” role=”main”>
<?php
// Start the Loop.
while ( have_posts() ) :
the_post();

// Include the page content template.
get_template_part( ‘content’, ‘page’ );

// If comments are open or we have at least one comment, load up the comment template.
if ( comments_open() || get_comments_number() ) {
comments_template();
}
endwhile;
?>
</div><!– #content –>
</div><!– #primary –>
</div><!– #main-content –>

<?php
///get_sidebar();
get_footer();

Ok. Thank you