Note: in the future attach the original php file rather pasting the page code.
couple of problems I see on this page:
1) Multiple instances of the server validation server behavior.
There should only be one instance of the server validation server behavior, all of the validations for the form should be defined in that one instance.
2) the captcha validation uses required, not Like Entry
3) there is no like entry validation for the email address elements
see the form toolkit getting started guide for details on setting up the captcha validation using the like entry validation type:
same concept is used for confirming the emails.