You can receive a refund for that unused label here, it may take 24 hours for it to appear, before you can void it.
Find your label with this link . https://www.ebay.co.uk/ship/lmng/labels-history/seller-hub and to the left of the sales record there is a drop down menu under 'Actions' click on that , then click on 'Void Label'.
The refund will take between 5 - 7 days to process.
