If you do not receive Twitter notifications, please make sure you did the following:
- Check the type of notifications you have enabled for your Twitter account: How to define the type of Twitter notifications I want to receive. Typically, you may expect to receive notification for all users you follow, but the timeline notification are disabled as default, because they generate too much notifications for some users.
- Check the status of your notification for Boxcar in iOS "Notification Center" preference.
- Check that you did not the Boxcar "Do not disturb" mode enabled.