Did you get a chance to take a look at the problem with Kunena stats not showing up on the user profiles?
You have the statistics set to show in the tab so the fields no longer serve any purpose and can be disabled. I've reconfigured it to use the fields however and displays fine now. Please note no stats display if you haven't made a post yet.
Now notice the admin user has no rank, karma, or post count however you other user does. This is because the admin account hasn't made a post yet for any of those stats to calculate.