@[deleted] Yes, it is if you are giving each user a personal page, or letting them host a domain in their personal public_html folder. Your response does not however change my response. As I said I personally have never setup osTicket in a userspace. To get Apache to serve those locations there is some configuration magic that happens either in the Apache configuration files or in .htaccess files or both. That makes me think that something in the configuration is borking the paths, causing osTicket to not look in the right place for the plugin files. Or Alternatively something like SELinux or mod_security is preventing it from running right. It could be something as simple as permissions also, but since there aren't errors being provided this is like looking in a hay barn for a needle lost some indeterminate time ago.