Is the missing item an accessory? Make sure to check through all the packing peanuts (sorry, we hate them too) for any small, loose items. They often get overlooked, especially in larger boxes.
It's possible your order was split into separate packages, in which case you should receive the packages within 1-2 days of each other.
To file a missing item claim, please call support at 844-326-5786 or email us at firstname.lastname@example.org within 72 hours of receiving your order.