I have been having an issue from time to time with the ShipRush software giving me an error message for a correct address. It will say something along the lines of, "please check address, it does not appear to be a valid address for shipping". I then double check the address and confirm it is correct, and then ship either through USPS (outside of ShipRush) or FedEx, and have a timely delivery. I checked the settings, and I have the lowest possible address verification listed. Is there anything else I can do? Thank you for your help.