[Plugin: WPPizza] Cart not functioning properly

The cart does not respond when clicking on the prices or icon menus.
I have a orders page with the correct shortcode and all settings were set correctly.
here is the link of the development blog:
Here is the link to the blog https://fp-ids.com/fpids-blog/our-menu/snacks/
Any help or insight would be much appreciated as wppizza is really a neat solution for online food ordering. Thanks in advance.]