Illegal starting player

[Tony.oe4]

This is USAV ruleset. Please disrgard how this occurred as it was a 13U club tourney and my worktable was entirely kids.

My down official checks the lineups and says everyone is correct but R35 is on the court instead of R33 who was written on the lineup. At this point we have a problem but no one notices. We play and at 2-7, R33 subs in for R35 (illegal sub) but no one notices. We play and at 5-11, R35 subs in for R33. At this point, I am now informed that the wrong person started the game. I know the penalty is supposed to be removing the points back to when the illegal sub first entered the set. Because the illegal player started the set, should I have erased all the points for team R and made the score 0-11. Then award a penalty point and serve to team S to make the score 0-12 with team S serving?