Hello,
It caused by cache, please clear all cache. I made a test and it showing up https://www.web-design-hosting-surrey.co.uk/skinsense-test/product/retinol-booster-night-drops-15ml/#comment-55
Reviews is the built-in option of the WooCommerce plugin. You can enable it in the WooCommerce > Settings > Products http://prntscr.com/tpuzwo and also enable/disable for every single product http://prntscr.com/tpv0qo
Regards, Hung PD
