I can't start any multiplayer game mode or invite any friends to the party and I reinstalled
Hey Botnuja,
Welcome to the forums.
Can I ask when this issue started occurring? We have had maintenance on consoles for the past 2 days.
Depending on which platform you may find the following troubleshooting guides useful -
For PS4 players -
https://support.ubisoft.com/en-GB/fa...Siege-PS4-R6S/
For Xbox players -
https://support.ubisoft.com/en-GB/fa...-Xbox-One-R6S/
Please let me know if this helps your connectivity.