Sounding like an echo chamber in here, but I'll also chime in and say that I've tried to play I think 2 or 3 times over the past couple weeks, and I each time I'd join a lobby and not be able to connect to people that I've never had a connection issue with before. I didn't have a huge amount of time so I just kinda gave up after one or two retries and did something other than FAF.
That & the relatively sad state of affairs for the quality of Setons games at the times I usually can play. Not sure if there are decent general 1800+ team games being hosted these days, if so they're not (usually) at times I can play.
Edit: A random comment/thought, I am a bit surprised at the number of people having client issues. I know this is a classic "works on my machine" comment, but I've never really had issues of note with the FAF client over the years. I think there was a time where the window was buggy and could only be full screened or something like that but that was quite a while back and not something I heard other people complain about.