Normally, the default settings for RSSRadio mean push notifications are enabled, however many users are tapping "No" to push notifications as other apps increasingly abuse them.
This help article describes the steps to confirm your settings for receiving a push. If you have both RSSRadio and RSSRadio7 installed, ensure you know which you are trying to get upgraded.
Ensure "Background App Refresh" is enabled
Phone Settings App, General, Background App Refresh. Ensure RSSRadio is turned on:
Ensure push notifications is on for RSSRadio
Phone Settings App, Notification Center, Make it look like this:
Kill RSSRadio from the Multitasking
Double tap the home button, and swipe up RSSRadio.
Send me a new message
Settings, Help and Support, Get Help