It appears that since the last update, all notifications are being stored and not cleared when viewed. Each time someone give me Kudos on a ride, the notification symbol appears over the app icon on my home screen showing a cumulative figure of notification (new and historic). Each new notification adds 1 to the total. For example, I received +1 Kudos this morning, but the notification number showed 9 (a combination of the 1 new + 8 historic). I would expect that all the previous notification I had acknowledged would be removed from the total and only number of new notifications would show.