I already purchased Hello, World (Jewel Ver.) USA Limited Edition or Hello, World (Photobook Ver.), but I want to buy the [Signed] Album version. Should I cancel my previous order?

No need to cancel your order! Just send us a message at BAEKHYUN STORE HELP. We will add the [Signed] Album to your original order, and you may even receive a refund for the difference in shipping fees, depending on the final number of items in your order.