What you are seeing is the Elite Challenge; when you reach the end of the current levels, the game allows you play through previous levels while our team works on new levels.

When the new levels are released, you should begin regular progress in the game at the next level above the highest level that you've reached.

If you still need help or would like more information about the event, please submit a support ticket, by tapping the "gear" icon on the map screen, and then "support," or you can open an online support ticket here.