Swift Screen time Api error (family controls error code=2 )

I'm try to physical device always getting error on Error for Family Controls: Error Domain=FamilyControls.FamilyControlsError Code=2 "(null)"

AuthorizationCenter.shared.requestAuthorization{result in

      switch result {
      case .success():

        print("Allow to controle App ")
        break
      case .failure(let error):
        print("Error for Family Controls: \(error)")
      }

    }

My question is - how can I authorize my parents using Family Control API in order to use for example Device Activity framework and Managed Settings framework?