I tried to sign up for a beta however it came back with an error "incorrect email" even though the email address was correct.
Looking at the form it appears to be validating the domain part of the address incorrectly - it validates it as being of the form @a.b.c or @a.c where b and c are 2-6 characters long.
Email addresses can have more than three parts - mine is of the form a.b.c.d
There is no restrictions on the lengths of the parts - there used to be a limit on the last part but with the new TLDs that has changed.
Looking at the form it appears to be validating the domain part of the address incorrectly - it validates it as being of the form @a.b.c or @a.c where b and c are 2-6 characters long.
Email addresses can have more than three parts - mine is of the form a.b.c.d
There is no restrictions on the lengths of the parts - there used to be a limit on the last part but with the new TLDs that has changed.