You may restore (un-cancel) your registration at any time.
To cancel your registration, the Confirmation Number that you were given when you registered is needed. This is a string of digits that was presented to you with a note to either save it or write it down.
If you have forgotten or misplaced it, it can be recovered by clicking HERE.
Please note that there is no confirmation or "Are you sure?" function. Clicking the above button will perform the cancel immediately.