Your return delivery attempt may have been unsuccessful because the carrier used did not have the necessary import duties paid.
When import duties are not paid for a return delivery, the order cannot be delivered and will be held in the warehouse for a specified period. If the import duties remain unpaid after this holding period, the order will be returned to you, the sender.
When using Royal Mail or USPS: Your order will have been handed over to our local dispatcher, Correos. You can check the tracking on this link.
To prevent this issue in the future, please ensure that all import duties are paid for return deliveries to avoid delays or the return of your order. Import duties on return deliveries are typically the responsibility of the sender.