The kong API integration is already done, there should be highscores. But apparently there must be some action from the Kong admins to activate them, and as the game doesn't have a lot of plays...
my rating is low because basic platformer gameplay is a litte bit boring and if ball try to jump on an edge of a platform seems to be a double jump, fix it and is perfect :D
Oh, thanks for the info, there must be a problem with our integration then. We'll look into it.