Strange as you aren't requesting assistance on "external sources" but rather whether there were changes to their hardware or applications that mean different image sizes or aspect resolutions are preferred. Be sure when you ask not to add anything like "...rendered from 3ds Max" etc which will let them pretend it is nothing they should answer ;) Also, to check, what app are you using to view the images, is it some native in-built app, something third party (in which case Oculus may be right that it's not on them to answer, it would be on the developer of the viewing app)? Does it affect any and all of your images, even ones from different sources, rather than just the one you have created yourself?