Hi ,
At keytoschool.com we don't provide any cpanel access. Admin only get access of moodledata folder. You can create repository in moodledata folder, upload files there and can access it through moodle. To know how to set up file system repository please refer this doc http://docs.moodle.org/26/en/File_system_repository .
To know how to get your FTP username and password you can read this https://www.vidyamantra.com/portal/knowledgebase.php?action=displayarticle&id=23 .
And if you required any third party plugins and themes you can raise ticket at support@vidyamantra.com .