In the config auctionConfirm.yml in section gui add size: 27
exemple :
Code (Text):
gui:
size: 27
name: "Confirmation of purchase of an item."
title-true: "&eConfirm the purchase of {Item}."
title-false: "&eCancel."
description:
- "&5Sold by: &6{OwnerName}"
- "&5Price: &6{Price}"