[Plugin: Custom Contact Forms] Checkbox Help

How do you get the checkbox field to work correctly? I have it the intial value as Yes. I attached a field option to it. When the page loads the checkbox appears then it immediately disappears. Not sure what I’m doing wrong.

Here is the page:

http://test.aisitservices.com/bolster-your-staff/

http://ww.wp.xz.cn/extend/plugins/custom-contact-forms/