D. Wolf is correct on this. Unfortunately, it's set up for a max 4 rounds (it might be 3 or 5, don't recall). It's set up that way, so that we don't get 100 draws. I know the score error you have experienced and if I'm not mistaken, it's on the game's side.
Either way, I'll try and tweak a few settings and see if that fixes it (doubt it though).