The NL government has now decided that all events with more than 100 visitors cannot take place to avoid the spread of the COVID-19. If the event has definitively been canceled by the organization, the organization will contact you by email to confirm when the refund will be processed.
The organization will also contact you if your event is postponed. Tickets will likely remain valid for the new date, and you will be refunded if you are unable to attend. This is possible from the moment the new date is announced. Then follow the instructions in the email.