Use a laptop / PC and try Chrome, don't use the app or mobile browser.
There are 5 addresses which need to be corrected
https://accountsettings.ebay.co.uk/uas/addresses
Cancel the DHL label, and once all the addresses above have been correctly amended, purchase another.
For the unused label a refund is made to whoever paid for the label.
- If you selected 'Buyer pays’ when you created the listing, your buyer will automatically be refunded for any Simple Delivery label that isn’t used after 30 days
- If you selected ‘Seller pays’ and offered free postage on your listing, you'll need to fill out the Request a refund for Simple Delivery form for the label that wasn’t used. Make sure to send your request within 14 days of your item selling. Also ensure you add the replacement tracking number of the service used, and it shows delivery.
@susasmit-hwukax