WhatsApp, Instagram and Facebook go down
On July 3, the Facebook family of companies ran into severe technical difficulties with users unable to access photos and messages for an extended period of time.
// added by JK:
// calculate if the user is able to see the pdf or not.
$requiredSubscription = (array)get_post_meta(get_the_ID(),'_required_capabilities', true);
$showPdf = !$requiredSubscription || (class_exists('swishu') && swishu::has_access_to_content(wp_get_single_post($_GET['id']))) || is_user_logged_in();