I have been online 25+ years developing websites, server admin etc. Spent almost an hour submitting, cropping, submitting my profile pic and your wonderful system keeps rejecting it no matter how much of my face is in the picture. Who developed YOUR website? I think you might lose some contractors before they can even get started.
I'm sorry to hear about the trouble this caused. Could you please crop the image to include only your head and shoulders and resize it to 250x250dpi. Please let us know if the issue persists.