If they are too large or too many...or you have less then 5 posts (which you do), it won't allow them. When you can upload files one thing to remember is that everyone..even me..have limits as to the amount of space on the server your account can occupy. This is why we strongly suggest using a hosting service like Imgur or one of many others to upload your photos to and post links to your posts here..or any other web location. Those links are just text to these servers, not image files and don't take up the room. This forum also has it's own Imgur account that anyone can use. Look in the How To section for more information on how to use it.