neilgee

This plugin will display the name of the WordPress Template in use for the current page at the bottom of the page. It will only show in the front end when you are logged in. Just deactivate the plugin when you find which template you need to adjust.
<h3>Usage</h3>
Just activate the plugin and when logged in as an Admin look at the front end view of a WordPress theme, look at the bottom of the page to see which WordPress template the current theme is using.

Which Template Am I

Works like a charm, thanks for the plugin.

Great plugin

This plugin will display the name of the WordPress Template in use for the current page at in the footer. It only shows for logged in administrators.

Amin Nazemi

This plugin disables Pagination in navigation menu lists and preserves taxonomy hierarchy. 
Also, it helps you when you using WooCommerce and you have more than 50 category items. 
It can preserve WooCommerce category hierarchy.
FEATURES
<ul>
<li>Disable Pagination in nav menu add item lists </li>
<li>Preserve hierarchy in category nav menu add item list and posts category selector</li>
<li>Automatically scroll to first checked item in post category selector </li>
<li>Preserve WooCommerce category hierarchy</li>
</ul>

Preserve Taxonomy Hierarchy

Preserve hierarchy in posts category and navigation menu editor lists.

Which Template Am I vs Preserve Taxonomy Hierarchy