can confirm. no match is possible currently. co-op in general works though. Hope it's just due to some changes for the new one and it will be back soon so everybody can finish their trophies.
I got a reply from Ubisoft staff. I was told that they were aware and are investigating but could not give a timeframe for a fix. Sounds to me it might be a long wait. At least they are aware of the issue. I hope it would be fixed by the time I finished up FC5 dlcs and then New Dawn.
I've just merged two threads on this issue and I'm sorry we still don't have any updates on how long this will be unavailable for, but we are still aware of this being an issue and it's being looked into. Hope it's not too much longer for you all.