missing subscribe to comments reloaded

I am trying to use “subscribe to comments reloaded” and neither the box or the words “subscribe to comments” ( or a variation of it) is visible where a visitor leaves a comment.

I have combed the plugin in forum and it’s said that I have to manually put a line of code somewhere in the comment.php file. See below as per the plugin installation directions:

1. Activate the plugin
2. Customize the Permalink value under Settings > Subscribe to Comments > Management Page > Management URL. It must reflect your permalinks’ structure
3. If you don’t see the checkbox to subscribe, you will have to manually edit your template, and add ‘<?php if (function_exists(‘subscribe_reloaded_show’)) subscribe_reloaded_show(); ?>‘ somewhere in your comments.php
4. If you’re upgrading from a previous version, please make sure to deactivate/activate StCR

I have tried different locations within that file but have not been able to resolve this problem. Can you tell me where exactly to put this code, please. Should you have other thoughts on how to resolve this problem please let me know.

Thank you in advance for your time and reply,
~Debra