Hello,
According to the fact, that you installed an extra plugin that provides such solution (ajax add to cart for different types of products) you should contact to plugin’s author and ask them the hook they are using for such things.
Their support forum -> https://wordpress.org/support/plugin/yith-woocommerce-added-to-cart-popup/
We can only provide support for the questions related to our theme and plugins which are bundled with our theme.
Kind Regards,
8theme team