Trouble in Paradise, again.

Things seemed to be going well up to the point when I entered an email for Sarah
Mostly Math. Sarah, it says you are
already a Baen customer registered under that email address.
The free gift certificate can ONLY go to someone who is not already a Baen customer --or at least to an email address that isn't in their database.
If you are a registered Baen customer already [i wasn't] I guess you have to come up with an alternate email. How to fudge the rest of the details of the new customer account you'll need to set up, I'm not sure.
Anyway --I'm frozen at the checkout with no email address to which to send a gift certificate.
First person to PM to me with a valid, non-Baen-registered email address gets the certificate!