You have a javascript error on the site that is most likely causing loading conflicts.
I see it in the element inspector
<!-- FWB Lite Slider Start here -->
<script type="text/javascript">jQuery(document).ready(function(){jQuery.fwbslider('#fwbslider', {'delay':5000, 'fadeSpeed': 2000});});</script>
<div id="fwbslider" class="for_all">
<img src="https://www.mdsja.com/wp-content/plugins/full-page-full-width-backgroud-slider/inc/images/slide5.jpg" />
</div>
<a class="fwb_fromthis" target="_blank" href="https://wpfruits.com/full-width-background-slider/?utm_refs=www.mdsja.com" title=""><img src="https://www.mdsja.com/wp-content/plugins/full-page-full-width-backgroud-slider/images/FWB-big.png" /></a>
<!-- FWB Lite Slider End here -->
<script><script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-51194454-1', 'mdsja.com');
ga('send', 'pageview');
</script></script>
<!--wp_footer--></body>
</html>