I am unable to set my email address. There error message is "The form is not filled correctly."
Could it be because you are not allowing addresses with a "+" character in the user name?
I use this regexp:
^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$
for email address sanity checking.