If you received the voucher (code generated for your registration) in your email to participate in the event, you need to do the validation. In the email with the voucher, you will have a link.
1. Click on the link you received in the email and you will be directed to another screen
2. Register with Eventelis, if you have not already, or Login with username and password already registered. Fill in the requested data
3. It will open a screen, with the voucher filled, click on the "Validate" button and finalize
* You must register with Eventelis with the same e-mail address that you received the ticket