Overriding Templates

Hi,

I am trying to override one of your template files but can’t get it to work following your knowledge base article.

I have added a directory called wp-car-manager in my child theme.
I have copied the file contact.php to this directory and added a paragraph of text for testing. The text doesn’t appear.

If I add some text to the original template file on the same line it is displayed, so it looks as if the template is not being overridden.

I also tried adding the original folder structure to my child theme:
/my-theme/wp-car-manager/templates/single-vehicle/contact.php

I do not have any caching plugins installed.

WP Version 5.2.2
WP Car Manager version 1.4.2

Hope you can help, Ian