Open comments so anyone may read them

pmpro-open-comments-non-members.php

<?php
/**
 * Allows non-members to read comments on restricted posts.
 * Add the code below to your PMPro Customizations Plugin - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
function make_pmpro_comments_open(){
	remove_filter("comments_array", "pmpro_comments_filter", 10, 2);
}
add_action( 'init', 'make_pmpro_comments_open' );