How To Delete Author of A review

Try this code:

add_filter( 'comment_author', 'custom_author' );
function custom_author() {
  return 'Published ';
}

The code goes in functions.php for your child theme. If you don’t have a child theme, you can use the “My Custom Functions” plugin.

The result will be:
Published - 07/08/2017

The effect will also apply to blog posts.

So basically I did some trial and error before trying the above code. I tried to enter a review without entering a name and email address. It won’t allow that. Does your code eliminate the need for email address entry?

No, the code just hides the name and email. You should be able to see the name and email the dashboard and that will help you decide if a review is genuine.

To eliminate the need for name and email entry, go to Dashboard > Settings > Discussion and uncheck “Comment author must fill out name and email”. A review is just a type of comment.