This page's URL is matched by one of the RegEx rules you have in <em>"Settings"</em> -&gt; <em>"Plugin Usage Preferences"</em> -&gt; <em>"Do not load the plugin on certain pages"</em>, thus {bbackup_94402fb9ba80f392e0976ece85f92b2b876bfcaed8d83250cc06083f7139c7d9}s 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 the list of CSS/JS will be fetched.