Returns are not allowed.
Once you buy from the shop you commit to your order.
I received the wrong item.
Contact the shop with a photo of the wrong item. The correct item will be sent without you having to pay anything.
Picking your order at convention.
To pick up your order at convention will have an identity check, you don't have to show you IDunless you wish it, just the order invoice will suffice, you can keep it on your phone or print it and have it picked up by a friend or family.