Missing header icons & fonts

It looks like the site isn’t serving up the Shortcode plug-in. It is installed. I can see the directory and files via FTP client, the plugins dashboard, etc. but it’s not loading.

NOT FOUND – The server has not found anything matching the requested URI (Uniform Resource Identifier).
(XHR): GET – https://leslieduncan4kc.com/wp-content/plugins/rescue-shortcodes/includes/fonts/font-awesome.min.css?ver=4.6.1
HTTP404: NOT FOUND – The server has not found anything matching the requested URI (Uniform Resource Identifier).
(XHR): GET – https://leslieduncan4kc.com/wp-content/plugins/rescue-shortcodes/includes/fonts/font-awesome.min.css?ver=4.6.1
HTTP404: NOT FOUND – The server has not found anything matching the requested URI (Uniform Resource Identifier).
GET – https://leslieduncan4kc.com/wp-content/plugins/rescue-shortcodes/includes/fonts/font-awesome.min.css?ver=4.6.1
HTTP404: NOT FOUND – The server has not found anything matching the requested URI (Uniform Resource Identifier).
GET – https://leslieduncan4kc.com/wp-content/plugins/rescue-shortcodes/includes/fonts/font-awesome.min.css?ver=4.6.1

Renamed the existing directory and reinstalled the plugin. The icons and fonts are now showing correctly.