To Enable Push Notifications:

1) Go to the app Settings

2) Tap on Push Notifications

3) Here you can enable the category of push notifications you wish to receive.  You can also set a timeframe for "Quiet Time" where you do not receive push notifications during a set timeframe. 

To Disable Push Notifcations:

1) Go to the app Settings

2) Tap on Push Notifications

3) Here you can disable the push notifications for the app

If you are having issues where you tap the notifications but they do not take you to a specific article, try these steps:

1) Uninstall the app from your device

2) Power down your device for a minute or two and then power back up

2) Reinstall the app while on a strong wifi connection