It is now loading. The root issue seems to be the customized output of your shop product.
Example:
<div class="pm-store-post-img">
<a href="https://www.docofdetox.com/store/frankincense-essential-oil-100ml/"><img src="https://www.docofdetox.com/wp-content/uploads/2015/06/essentialoil.jpg" class="img-responsive"></a>
</div>
This plugin is specific to WooCommerce’s image loop. If it has been customized to not use defaults the plugin is not designed to handle it. To get around that, you can modify the template (yourtheme/woocommerce/ – wherever the image loop has been created). You would have to define image dimensions.
Example:
<div class="pm-store-post-img">
<a href="https://www.docofdetox.com/store/frankincense-essential-oil-100ml/"><img src="placeholder.jpg" data-original="https://www.docofdetox.com/wp-content/uploads/2015/06/essentialoil.jpg" class="img-responsive lazy" width="1000" height="1004"></a>
<noscript>
<img src="placeholder.jpg" width="1000" height="1004">
</noscript>
</div>
You would need to put in the placeholder URL for the image and no-script fallback.