To view invoices relevant to your orders, go to your profile in the menu at the top right of the screen, click on "My Orders", then on the Pdf icon corresponding to the order. The relevant invoice will automatically be downloaded to your device.
For Italian customers: the electronic invoice will be correctly delivered in your fiscal drawer and eventually delivered via SDI to your electronic address (Pec or recipient code). You can also find invoices on your Brandsdistribution profile but they are not valid for tax purposes.