If your order contains products of different categories, they might be delivered in separate packages. This is because each product has different shipping needs. 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.