The event organizers are the ones who create and manage the events on go&dance and they are responsible for establishing a refund policy and issuing refunds. Refunds are not normally possible, but if you wish, we suggest that you write directly to the event organizer.
When you order tickets on go&dance, a confirmation is sent to the email address you entered when you purchased them (it is not sent to the email address you may have entered when filling in your attendee details). If you haven't received it, it may have gone to spam or you may have typed the wrong email address. In any case, do not worry, you can go to your go&dance private area and download your tickets whenever you want.
No, you don't. Each ticket has a unique code that serves the organization to validate it on the day of the event, so if you can show your ticket with your mobile phone the verification system will also work.