Can´t get in on multiplayer

Im not shure this is technical, or just user error. But now when i wanted to play diablo 3 again i just cant get in on servers with people on them. im trying different settings before klicking join, but the message “0 people playing”

and i have tried making new heroes and seting them up differently. Some seasonal, and a “hardcore” for example.

I can see in the history that i definetly played with others in a Co-OP game in 2017 … Now i cant even find the option “co-op” when setting up for joining

Now im just jumping from charachter to character and searching for people but never find anyone.

It is “reaper of souls” if that matters ?
Thanks .