I have sold two items that I originally had up for pickup only. The buyer wants them posted which I am happy to do but I cannot change the form of pickup or delivery now as I’ve already accepted the offer for sale. Should I just cancel the order and let them know to re purchase it through a new listing with postage enabled or is there something else I can do. There would be no way of me being able to scan their pick up code either as they are interstate. Thanks !