Originally Posted by
spanishflea
The policy says that you are not permitted to standby on any part of an international itinerary, so the app was behaving correctly. Great news that you were finally able to get a manager to help you override the system, you got very lucky!
The app never allows you to SDC on just the connecting flight in my experience, even on domestic flights. Which is how I'd mostly want to use SDC when I arrive early or there's a delayed flight that I could now get on at the connecting point.