Custom widget area sidebar is ignored

Hi,

I’m using the “Subscribe-to-comments-reloaded” plugin and created a management page for it with this tutorial:
https://github.com/stcr/subscribe-to-comments-reloaded/wiki/KB#Real-Page

1. I have made a copy of loop-page.php in folder “includes”.
2. Re-named it to subscribe.php and added at the very top of this file

<?php
/* Template Name: Subscribe To Comments */
if (isset($wp_subscribe_reloaded)){ global $posts; $posts = $wp_subscribe_reloaded->subscribe_reloaded_manage(); }
?> 

to have a template for a new empty page (= management page for the plugin), then assigned this template to a new page:

Then – and this is the issue – I created a “custom widget area” just for this page (made with this template created in that way), and added in this custom widget area some widgets like “latest news” from ENFOLD, and assigned to the new page this area as a sidebar:

Now the problem is, this copy of loop-page.php in folder “includes”, which I used like a template now, ignores the custom widget area.
Instead the default sidebar for pages and its widgets is shown.

• I guess, it has something to do with the new page/new page template like I have described it above?
• Maybe I have used the wrong file for a duplicate, to create a PAGE TEMPLATE? Isn’t it “loop-page.php” in folder “includes” or better page.php in ENFOLD’s root?
• Or maybe the “custom widget area”, I have created just for this page, does not work with this duplicated loop-page.php, now is named now “subscribe.php” and acting like a template?