You can do this in two ways:
- after logging in to your account, in the window that will appear in the app and at www.less.app
- in the e-mail you will get after receiving the order.
In case of integrated providers (InPost, DPD, Poczta Polska and Paczka w RUCHu) confirmation will be possible immediately, and in case of non-integrated providers or personal pickup after 9 days from the moment of purchase.