Yes, I installed the Judge.me reviews app, but why do I not see this feature in the app? Rather, every person who enters the product page can leave a rating as he wants. How can I modify this?

Anyone can leave a review. I only want my customers who have purchased an item to leave a review. I do have an email system set up but if you scroll my product page you can leave a review. How do I change that. I just downloaded Product Reviews app a...