"Team Tournament" - Rules and Discussion

Either I'm missing something or... does 10 days refer to a round (3 games) or just one game???

10 days is one round, meaning you have to play 1 game against an opponent from the opposite group within 10 days, according to the assigned positions, i.e., the top seed against the top seed, the second against the second, and so on.
The first stage consists of 30 days, meaning you have to play 3 games against opponents within 30 days, who are in the same group and in the same position as you. But I understand that the organizers will draw the teams for the next rounds of the first stage, and you will be able to play early against an opponent who is in the same position as you, games 2 and 3 of the first stage, according to the draw. Thus, the first stage can be significantly shortened in terms of days.
I hope I explained everything correctly; let the organizers correct me if anything is wrong.