Sign up troubles in fanfiction.net?

im signing up for fanfiction.net.......and well i feel out the form it only asks for Pen Name: Email: Re-type Email: password: retype password: Yes, I have read and accept the Terms of Service and Privacy Policy. and Yes, I'm at least 13 years old then i click sign up........but then underneath new account sign up and above pen name it says Please complete the image/sound verification form. (1) i dont understand........please help! i really want to post stories on there!