Yes, because you are using the wrong link. You need to use the DIRECT LINK. The direct link will have the image hoster, the image numbers, the image name, then end with a .png, or a .jpg, or whatever image type you saved the file as. If the last symbol is a /, then it's the wrong link.
Also, I think there is a posting rule, where you cannot post links until you've reached a certain post count.