The system might not recognize your P.O. Box address. If this is the case, please follow these instructions: Simply use your local Canada Post Office address as your shipping address to complete your order. We will ship your order there for you to pick up. This is called a ‘FlexDelivery’ and is included in the XpressPost service and quite common in rural locations.  In the ‘special instructions’ you can choose to leave your actual P.O. Box address and we’ll attempt to ship directly there on our side. If we cannot, we will ship directly to the post office for you to pick up. You can use the following link to find a post office: Find your nearest post office