When Yes (default) and a customer with an active, auto-renewing subscription that is set to delivery (not a pickup location) edits their shipping address in their profile, Sprwt swaps the plain Save button for a pop-up asking whether the new address should also be applied to that subscription's upcoming deliveries, and updates the subscription's shipping details if they confirm. With No (or for pickup subscriptions, or ones not auto-renewing) the profile address change is saved on its own and the subscription keeps the address it was ordered with.