When you signed up for an ICU login account we sent you a confirmation email with a link. Your account would have been activated if you had received this message and clicked the link.
If you don't have a record of this message (even in your spam folder) then please contact the ICU using the same email address as the one you chose for your login account and stating your season ticket.
First, subscribe as a member of the ICU for the current season, if you haven't already done so. Then sign up for an account and wait for it to sync with this site (it can take up to 24 hours).
On the main site, there are detailed instructions for becoming a member and setting up an account, if you need further help.