If your order is incomplete two possibilities can explain the situation: your order was shipped in multiple parcels or an item was out of stock.
How to check what´s the reason of your order being incomplete?

Multiple parcels: please check if your order has been divided into multiple parcels. You can do it on your shipping confirmation email. 

In case of shipments with DHL, the order may be divided into multiple parcels when it has a high-value or when it has a high weight and volume.

Out Of Stock Product: The fulfillment of orders will depend on the availability of the products. If any problem occurs with the supply of the products purchased or if the items are out of stock, we will immediately inform you by email and we refund any amount paid for the missing products within 10 working days.