Please make the full backup of your site as well as the Theme settings export and check the issue on the Storefront theme to detect if our theme causes the problem. Storefront is a free theme developed by Woocommerce.
this is has nothing to do with changing themes, but this is always a solution you suggest!
it doesn’t matter, because I have found the issue and have fixed it!
now! I need to add review count on the product, please check the screenshot
I thought the review do not appear even after there had been added. That is why I suggested testing on the Storefront. That is fine, you have solved the issue. If you have any questions please feel free to contact us.