help, my friends and I can't play in multiplayer

[VerMishelb]

Check this article. It has some explanation of common issues.

Multiplayer

This is a collection of preliminary random notes about the upcoming multiplayer. The information contained herein is subject to change. NOTES There’s no “mission failed” in multiplayer games. Everyone plays on until the mission is won. If you lose all your lives you carry on playing as a “zombie”, meaning your score will no longer increase. You can play mission as multiplayer, except once-only missions. Any competitive mission played multiplayer will be automatically disqualified…