Once purchased, tickets cannot be changed. You must first cancel and then re-purchase the desired ticket.
Go to the main menu and touch ‘ Check/Refund Ticket ‘.
Search for a reserved ticket using the name, e-mail address, password, etc. that you entered when reserving the ticket.
Your reserved ticket will appear.
If there are multiple tickets, select the ticket you want to cancel and touch ‘ Refund ‘.
After confirming the refund amount and fee, touch ‘ Confirm ‘.
Select ‘ Yes ‘ if you want to cancel the ticket, or ‘ No ‘ if you do not want to cancel the ticket.
Ticket cancellation has been completed.
