[Plugin: JJ NextGen JQuery Slider] slider not functioning / still seeing NextGEN displayed

I’m having a bit of a problem actually getting the jQuery Slider to show/function. Currently, I’m still seeing the NextGEN gallery display(tiled thumbnails).

In my page template, I have the following:

<?php
	if( is_page( 28 ) ) {
	echo do_shortcode('[jj-ngg-jquery-slider title="Hugo" gallery="7" html_id="about-slider" width="921" height="392" order= "sortorder" center="1" effect="fade" controlnavthumbs="true" thumbswidth="227" thumbsheight="137" thumbscontainerheight="50" thumbsgap="5"]');
	} else {
	}
?>

with this loading jQuery in functions.php:

<?php 

if (!is_admin()) add_action("wp_enqueue_scripts", "my_jquery_enqueue", 11);
function my_jquery_enqueue() {
   wp_deregister_script('jquery');
   wp_register_script('jquery', "http" . ($_SERVER['SERVER_PORT'] == 443 ? "s" : "") . "://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js", false, null);
   wp_enqueue_script('jquery');
}

?>

I’ve also tried putting the short code directly into my page via the admin in HTML mode; no success.

Any ideas on what could be causing the issue & how to fix it?
Thanks.

https://www.ads-software.com/extend/plugins/jj-nextgen-jquery-slider/