WeatherKit consistently fails with the following error: WDSJWTAuthenticatorServiceListener.Errors Code=2 This happens on a physical device regardless of the troubleshooting steps I try. After the error occurs, the app uses a third-party fallback provider successfully. The issue appears similar to failures reported by other developers on iOS 26, even though the WeatherKit entitlement and signing configuration seem valid. I have verified the following: • The signed application binary contains the WeatherKit entitlement. • The embedded provisioning profile contains the WeatherKit entitlement. • The application identifier and team identifier match the provisioning profile. • The WeatherKit capability was disabled, saved, enabled again, and saved. • Xcode automatic signing generated a new provisioning profile after resetting the capability. • The project was cleaned and a fresh build was installed on the physical device. • Both the application and the device were restarted. • Location permission is granted and the app receives valid coordinates. • Network connectivity works correctly. • A non-Apple fallback weather provider successfully returns a forecast for the same coordinates. Despite this, every WeatherKit request still fails with WDSJWTAuthenticatorServiceListener.Errors Code=2. Has anyone identified the cause of this error on iOS 17 or 26 or found an additional signing, entitlement, App ID, or provisioning step required to resolve it? Environment: • iOS version: iOS: 26.6 (23G71) • Xcode version: 26.5 • Device: iPhone 14 Pro • WeatherKit API used: WeatherService.shared • Distribution method:TestFlight