A new leaderboard system has been added that has replaced the old ranking system. The new leaderboard has a totally new design and interface.
Gone is the simple 5 player list that resets every week. The new leaderboard displays a list of 20 players and all player positions remain active unless bumped by a higher level player.
You must access the leaderboard in order for your stats to be recorded. Each time you level up, you can check the leaderboard so that your progress is recorded. Your progress on the leaderboard is only recorded when you log in and access it.