Yes, when we or the customer corrects the address, the customers address also gets corrected so the next order of that customer will have the corrected address already saved.

Yes, we set customizable order tags for invalid or corrected addresses. You can apply a filter based on tags in your order overview in shopify.

Contact us! Depending on what integration you need, we might implement it for you even if we dont support it right now!

Yes, you can customize such rules via the settings page of our app.