If your order contains products of different categories, they might be delivered in separate packages. This is because each product has different shipping needs or print providers. For example, if you order a poster and a t-shirt, they’ll come separately. Posters travel better in a tube, while the tee would need a different package. So don’t worry if you don’t get all the products you ordered at once - the others will arrive later.
Remember that FedEx doesn’t ship to PO boxes.