Configuring E Mail Adress And Date Of Birth

[mysportsnutrition]

Please im begging some one to help me with my oscommerce website. I bought a template (oscommerce) Everything is working perfectly except that when a customer tries to regstister fills in the fields and presses enter, there is always an error with the email. even though it is the correct e mail, it tells the customer that its incorrect. How do i fix it so that they can type in any email and it will go through. really need this sorted out quickly, so if anyone is kind enough to help me it would be very much appreciated.

 

I would also like to know how change the fields to put the united kingdom date of birth (day/month/year) rather than the American date of birth (month/ day/ yeah) SOME ONE PLEASE HELP!!