We do not merge orders, if you place several orders in a row by choice or by forgetting a product, they will be sent individually.
The orders are not cumulative, neither for the free product advantages available upon checkout, nor for the delivery charges. Delivery charges will therefore be applicable for each order according to its amount and will not be refunded.
If it is still possible, we may try to cancel all your pending orders so that you can place a single order with all your products. Please contact customer service for more information.