Hostelworld indicates that if you apply for a free refund, you can contact the staff of the platform, and your deposit payment will be refunded to the payment method you used for the reservation within a commercially reasonable period from the date of cancellation. Non-refundable reservations cannot be modified, and if you cancel the reservation or do not use the accommodation associated with the reservation, you will not receive a refund of the cost of the non-refundable reservation.