A. Check the settings in the app to ensure that location services are enabled. Go to your iPhone's Settings > Privacy > Location Services, and make sure OneBusAway is set to 'While Using the App'. This can help improve the accuracy of bus predictions by allowing the app to access your current location more effectively.
B. Try refreshing the app data by pulling down on the screen to refresh the bus arrival times. This can sometimes correct inaccuracies in the displayed information.