If you can not attend the event, you should first consult the refund policy on the event's official website. There you will have access to the cancellation deadline as well as the percentage of refund, which vary from one event to another.

If you are still on time for the request, you must send an email to support@eventelis.com, informing us that you will not be able to attend, then we will cancel the purchase and start the refund process.