This page explains for when a ticket has been cancelled.
When a ticket you have ordered has been cancelled, you'll receive an email with the subject line "[Event name] Important:Your ticket was cancelled".
The person who can cancel your ticket is the event organizer. If you don't know why your ticket was cancelled and you'd like to know, please contact the event organizer directly.
If the above does not solve your problem, please contact us via the inquiry form.
(Our business hours are from 10:00am to 6:00pm Japan time on weekdays. For inquiries made on weekends and holidays, our response may be on the next business day.)