Hello,

To enable reviews you need to Go to WooCommerce >> Settings >> Products.

Screenshot for Clarification: https://ibb.co/jVKmrDL

I have visited your website and the swatches are working absolutely fine on my end.

Screenshot for Clarification: https://ibb.co/YPM33KR

If you are trying to ask anything else then provide with some relevant screenshots to check it myself and help you out accordingly.

Best Regards.