I pad Photo Issue

I am having an issue when on this site using my I Pad not seeing photos someone has attached to their thread. If I open a thread and someone has attached a photo, all I see is an outline of a box but no photo. When I log in using my Lenovo PC, I can see the photos. If I click the photo box using IPad, I get a message saying permission denied..links to files in the forum are only allowed from the forum itself? Must be an issue with Safari? Anyone else having this problem?