11 months ago and not one person has helped with this. They must be just learning as well. And your a step ahead of them by now.
To fix the problem go to appearance then customize then custom css, add this
.single-post .attachment-post-thumbnail {
display: none;
}
Problem solved
add this code to the end of your theme’s functions.php file. Works great!
add_action('save_post', 'save_other_video_thumbnail', 100, 1);
function save_other_video_thumbnail($post_id) {
$postdata = get_postdata($post_id);
if ( $postdata['post_status'] == 'draft' OR $postdata['post_status'] == 'future') {
get_video_thumbnail($post_id);
}
}
