Hello. Someone replied last time you asked a few days ago, did you try doing what he said already? Here's a link to your previous post: http://japaneseclass.jp/feeds/comment/5348
If the web browser you are using is Safari, I think trying to add a profile picture doesn't work, there's something wrong with it.
Internet Explorer 9 (or higher), Chrome, Firefox, or Opera all work fine though. ^^