I looked at the regulations again, and it seems that the option of 3 players advancing from each group was intended for the case where three players in one of the groups shared points for 1st, 2nd, and 3rd place; this is not the case now. So, let the six players continue playing, and the others will compete for 7th-10th place. Then everything is simple: according to paragraph 5, the quarter-finals (stage 2) are skipped, and they immediately play the semi-finals.
By the way, since the game with geroj was replayed (the first time on Only Strong) on Divided Loyalties, I believe I can play another game on Only Strong; I ask the judge to clarify this point.