You need to finalise the transaction now only on the Seller Hub here:
https://www.ebay.co.uk/sh/ovw
Go to Orders >> Awaiting Postage, click on the item then top left on View Order Details.
Far right from More Action drop down menu click on ' Mark as Dispatched' if you have it, add any tracking number there too.
I see you have sold 2 identical items, did you have 2 sets to sell?
@curr_60