Don't think there is any tool in Moodle that shows moodledata/temp ownerships/permissions other than errors when Moodle is attempting to work in that directory. So there isn't anything you, as Moodle Admin *which is inside moodle code only* ... not true admin at the operating system level ... can do, me thinks!
You did say you'd pass that along to server admin. Would think since you are hosted on Amazon, server admin would be aware and knowledgeable enough to fix IF the issue is ownerships/permissions.
'spirit of sharing', Ken