What can I do in case I do not agree with the offered scoring?

It is a game 64935: http://www.littlegolem.net/jsp/game/game.jsp?gid=64935

After pressing Count Score I received:

White: 1 (area) + 0 (prisoners) + 5.5 (komi) = 6.5 points

Black: 21 (area) + 0 (prisoners) = 21 points

Black win by 14.5 points.

Though I supposed to receive a counting like:

White: 21 (area) + 5 (prisoners) + 5.5 (komi) = 31.5 points

Black: 21 (area) + 0 (prisoners) = 21 points

White win by 10 points.

Thanks for your assistance. Jan

After pressing Count Score, you have to mark dead groups yourself by clicking on them. When you're ready, click “offer score”.

Thanks. You were right, it re-counted the score after left click on one of dead stones.