It appears when you try to upload too bog (too havy) photo and doesn’t stay permanently there but your previous picture (if you didn’t previously delete it) remains as a profile picture.
See here, there somewhere the maximum size is mentioned in the text and is shown on the last picture too.
Oh, and don’t mint for a bit different layout. the puctures are from before the layout was newly updated.
Hope it helps.
As for the names … I agree with you and if @aran agrees with and is willing to change your name, why not (as long as it meets forum rules (about what I have no doubt it will at all) 
) . The profile is yours anyway.