All game-related questions should be directed through the ubi.com server.

And also: are there any rules of etiquette, or something, when conducting duels? I tried several times to join a created game, but each time I got the message: "The game server has disconnected." Then some smart person told me that it means the player was waiting for someone specific, not me, and I could get banned for that. Well, I didn't know. So, should you always agree beforehand? That's absurd: you can't agree with an entire country.