Having a "Reconnect to previous session" button is useful. However, it would be helpful if the UI did not show this button if the previous session has expired. Could you either (a) add logic in wirecast to know if a session is older than X to automatically disable it, or (b) Do an API call back to your servers to validate if the last session is still available on boot up of wirecast - and to not display this field unless it is valid.