I have done some googling and apparently Peachey had the same problem. This is what he advised: http://www.italki.com/notebook/entry/58604.htm

I have had this problem myself, so I had to contact the italki administration. I have no power in these matters. Go up to Site Feedback at the top of this page and describe the problem.Good luck Cherry.

Cherry!:) One you click Edit Photo, and you go to that link you included here, you are meant to click on the yellow box on the right, on the little button that says something like "examine" (I don't know what language you use Italki on, so that depends) and there, you select the picture you want to use. If it doens't allow you to use a certain picture, is because the format of the picture (bit map, gif, jpg, jpeg) is not compatible with the formats allowed by Italki:) You can try to change the format of the picture or just select another one:) Much love!:) Ana:)

If your profile is teacher's profile, you cann't change your picture by yourself. Please sent your picture to us, we'll change it for you.