http://community.infopop.net/6/ubb.x?a=tpc&s=729094322&f=5163077913&m=4123078314This is a thread that I think addresses your issue. The reason for the cookie is to prevent kids from figuring out the age screening and simply hitting the "back" button to re-register with a different age.
When someone contacts you with this problem, you can determine whether they are truly an adult with a problem, and then tell them to clear their cookies. Then they'll be able to re-register.
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Rosemary O'Neill
Co-Founder, Infopop Corporation
