In the event of cancellation, the costs are calculated pro rata for the duration of use of the product and billed in the following month. The setup fee is due in full upon provision of the selected product. A refund of the setup fee in the event of cancellation or termination after the product has been made available is excluded. Further information on cancellation can be found here.
https://docs.hetzner.com/general/cancellation/cancellations-faq/