Client received a notice that the USPS API will be retired in Jan. 2026. I'm sure the current version of the cart is updated, but is it possible she has a separate account with the post office that is nothing to do with the cart?
Web Tools API platform will be retired on January 25, 2026.
quote:The Web Tools API platform will be retired on January 25, 2026. To avoid any service disruptions, migrate to the new USPS APIs. Contact API Support for help and provide any feedback via the feedback form.