The error at the bottom of the page is the source of the problem:
Warning: Unknown: open(/home/content/03/10641003/tmp/sess_36pp5192udira6laohoh2shqm4, O_RDWR) failed: No such file or directory (2)
This means your session_save_path setting in your php.ini file is wrong. You will probably want to contact your hosting provider to fix this issue. I made it so the captcha image appears, but it still won't validate until sessions are fixed and working properly on the server.