Please ensure that the recipient is able to accept the package within the delivery window. If the driver is unable to reach the recipient, they will leave the package in front of the door (if accessible), and we are not responsible for products that are left unattended. Sometimes the concierge will not let drivers take the package up—please understand the delivery protocol of the building prior to the delivery day. If a driver needs to re-deliver, additional charges may apply. Please know that in some special circumstances such as snow storm, traffic accidents, etc., delay may occur on rare occasions.