Have you received a 6 digit collection code, this can be found in eBay messages to you, or in the order details for the item in your Purchase History.
Send the seller a message, advise them that on bringing this code, they scan it, or manually enter the numbers, and this shows collection which will in turn release that payment. They can come here to us, if they need any confirmation of this process.
Express the urgency for the need for this item asap.
@hira-uk2014