You can offer your ticket on the Waiting List Platform. The waiting list opens well before the festival. This is the only way to resell your ticket(s) 100% safely.
Go to the confirmation email in which you received your tickets and look for the 'Manage Order' button at the bottom of the email.
You will then enter the MyOrder environment; click on 'More actions' and then select the tickets you want to return to the Waiting List.
Confirm that you wish to offer them.
Your tickets will be made available to visitors on the Waiting List.
As soon as there is a match, they will receive a payment link via email with a limited payment period.