These are the restrictions if you use the forum as a host.
Allowed file types: txt, jpg, gif, pdf, png, zip, rar, jpeg, skp, svg, ai, gif, 7z
Restrictions: 8 per post, maximum total size 10240KB, maximum individual size 4096KB
Perhaps your pics are bigger than 4 mb, that would get them blocked. So, load them into a graphics program, scale them down and try again. This might also get rid of your 'my pics are rotated' problem.