For all our apps that support the Agenda/Calendar views, these views depend on the iOS Calendar app to access your calendar events. So the first step is to make sure on all of your devices the iOS Calendar settings are the same. Please make sure that the iOS Calendar app on all your devices have included the same calendar that your are interested in. Secondly, you want to check the calendar filtering in our app are the same on all devices. To see the calendar filter setting, tap on the funnel shaped button on the top right corner from the calendar view.