automatically-close-popup.php

<?php

add_action( 'wp_footer', 'my_custom_popup_scripts', 500 );

function my_custom_popup_scripts() { ?>
<script type="text/javascript">
      (function ($, document, undefined) {
               
        jQuery('#pum-123')
            .on('pumAfterOpen', function () {
              setTimeout(function () {
                  jQuery(this).popmake('close');
              }, 10000); // 10 Seconds
	      }); 
        
      }(jQuery, document))
</script><?php
}