Version 2.1.5 – Variable products won't show variations & add to cart

My website is
https://www.livetruesouth.com

Here is an example of a variable object.
https://livetruesouth.com/product/womens-premium-emblem-tee/

I am using the Vantage Premium theme, but I deactivated it and activated twenty fourteen, and the issue remained.

I really wanted to get my website active today. Any ideas?

https://www.ads-software.com/plugins/woocommerce/