buyer wants to pay but invoice is ticked paid!!! how do I (the seller) untick the invoice which I cannot find anymore...Please advise as the buy wants her item asap...

buyer wants to pay but invoice is ticked paid!!! how do I (the seller) untick the invoice | Selling

buyer wants to pay but invoice is ticked paid!!! how do I (the seller) untick the invoice | Selling | eBay Australia