One way to post the screenshot is to simply upload it to somewhere in your WordPress site and paste a link into a reply here.
But here is something else to try and see if it fixes your problem (it fixed a similar problem that I had):
Open up the functions.php file in your theme’s directory using an (S)FTP client to access the web server ([WP-HOME]/wp-content/themes/THEME-NAME), or create it if it doesn’t yet exist (in this case be sure to add <?php at the top of the file and ?> at the bottom of the file), and add the following:
// remove autogenerated facebook open graph metadata
remove_action('wp_head','jetpack_og_tags');
// manually add facebook open graph metadata
function insert_fb_in_head() {
global $post;
if ( !is_singular()) //if it is not a post or a page
return; //simply don't add og metadata to the header
echo '<meta property="og:title" content="' . get_the_title() . '"/>';
echo '<meta property="og:type" content="article"/>';
echo '<meta property="og:url" content="' . get_permalink() . '"/>';
echo '<meta property="og:site_name" content="' . get_bloginfo('name') . '"/>';
if(!has_post_thumbnail( $post->ID )) { //the post does not have featured image, use a default image
echo '<meta property="og:image" content="[URL TO DEFAULT IMAGE FOR POSTS]"/>';
} else { // the post has a featured image so go and use it
$thumbnail_src = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'medium' );
echo '<meta property="og:image" content="' . esc_attr( $thumbnail_src[0] ) . '"/>';
}
}
add_action( 'wp_head', 'insert_fb_in_head', 5 );
Where I put “[URL TO DEFAULT IMAGE FOR POSTS]” replace that with the URL to a 100×100 pixel png file you upload to your web server that will be used if the post contains no image. If the post has an image this code will instead use it.
What this tells your site to do is disable Jetpack’s automated addition of Facebook metadata to posts and replaces it with your own implementation, which uses the image found in any post that contains an image but otherwise uses an image you explicitly choose in the block of code itself. I found that this stopped me from having Jetpack’s publicize use some random picture that wasn’t even real and instead now uses my site’s favicon (in a larger format).
Hope this helps.
