Can't edit reviews

First of all thanks for the plugin ??

But, assuming a root installation in your admin actions means any other type of set-up results in the edit button not working.

You should be using
admin_url() on line 70 of rich-reviews-admin-tables.php:

function column_edit($item){
  return sprintf('<a href="' . admin_url() . '/admin.php?page=fp_admin_add_edit&rr_id=' . $item->id . '"><span class="button rr-button">Edit</span></a>',$item->id);
}

https://www.ads-software.com/plugins/rich-reviews/