Host the image on a normal folder on the site (ex:
http://aleromod.com/aotm/______.jpg), not as a stupid forum attachment
This is what is supposed to be visible to everyone. It's protected and only visible by admins.
Code:
http://www.aleromod.com/forums/attachment.php?attachmentid=12362&stc=1&d=1404340707
If I put that URL in my browser, the forum tells me "you do not have permission to access this page."