Notifications problem in iPhone and iPad.

Over the last 2 days, the number of notifications on articles I have yet to read (number in a red circle on the app’s icon) continues to increment up. Now at 14.  When I open the app, it says there is only 1 unread notification.  When I tap on the ‘notification folder’ in the app, no articles appear.  This all began after installing the latest update (version 3.6.0)