This page's URL is matched by one of the RegEx rules you have in <strong>"Settings"</strong> -&gt; <strong>"Plugin Usage Preferences"</strong> -&gt; <strong>"Do not load the plugin on certain pages"</strong>, thus Asset CleanUp is not loaded on that page and no CSS/JS are to be managed. If you wish to view the CSS/JS manager, please remove the matching RegEx rule and reload this page.