Reviews not showing

Hello,

For the testing please try to switch to any default theme like twenty-twenty and check if it is working or getting the same issue.

If you are using the child theme, please switch to the parent theme and check.

Also, try to check the review settings.
https://help.cusrev.com/support/solutions/articles/43000033867-reviews-not-showing-on-product-page
https://stackoverflow.com/questions/54087209/woocommerce-product-reviews-not-showing-in-product-detail-page