I've been getting the message "The Assassins Creed Revelations server is not available at this time. Please try again later." for days now when I try to play multiplayer. My XBox Live connection is fine. And no, it's not a NAT issue because when I *could* use multiplayer it said my NAT type was awesome.
I have the same issue. After all possible troubleshooting UbiSupport has declared that they will look into it. Since this problem is rare I doubt I will get to play ACR mp ever again. If you are having this problem UbiSupport will not help, don't waste your time. It is entertaining to hear their reps say you're SOL without actually saying it. Everything was fine..I never even lagged..then a "quick maintenance" and in come the scattered reports. This IS ubisoft's fault and it will eat away at me if not resolved. I have never enjoyed online mp more than I do ACR..please don't sweep us under the rug.
same here :/ I have been playing couple days Assassin's Creed Revelations MP but suddenly during at the game i got message '' The Assassins Creed Revelations server is not available at this time. Please try again later. '' after that i have not been able to play it. It wont let me to login to Uplay either, but if i play Brotherhood both works well~ and this happened to me on sunday..