Hello conticreative1,
I have had a similar issue however I have managed to fix it. The issue is that the JS file: add-to-cart-variation.min.js contains information for a previous version of WooCommerce. I have added a pull request to his git page with a new file. Please try the file: https://www.filedropper.com/add-to-cart-variationmin
If you replace the same file in his plugin – woocommerce/assets/js/frontend/add-to-cart-variation.min.js
That should do the trick… worked for me ??