My pre-sale code is not valid (anymore), what can I do?

This post is also available in: Nederlands (Dutch)

If you get an error that the pre-sale code is not valid, we advise to type the code instead of copying it.

As long as the transaction is not completed, the code is valid again after one hour.

Your pre-sale code is only valid once. Even if you have not yet reached the maximum number of four tickets. It is not possible to use de code again.