That's right Clae. We have to fix this visual form. But in terms of mechanics it doesn't change much. Since the system does not have + the maximum roll is 12 (2d6), so you cannot achieve total successes and / or feats on difficulty 5 (RV 15), they are only possible on difficulty 4 (RV 12).
About page 9, In the last version there was this typo, but in the new one, I don't see it. The table is in page 11 now, and I think it's fine.
Thank you again!!