There can be several reasons for this.
- It´s full. In that case, try another time, date or location.
- There are issues with verifying your bank details. If you experience problems at the finish line, you can try another card or wait a bit. The booking is not complete until you receive a confirmation email.
- There can be a bug on the website. Try refreshing the page (maybe even change your browser) and try again. Sometimes the page bugs when changing languages, so try to keep the same language throughout the whole order process. Continue the process (4 steps) until you enter your card details. And when you press pay, you will receive a confirmation email.
Hope to see you at KOK in the near future!