I always add a space or two before the flag: / -x

If it helps, you’re not logged into EOS automatically anymore in 1.0. You have the option for direct IP connect, Steam, or EOS.

There are many new settings that you can apply to a session. Now you can play singleplayer with all the multiplayer capabilities disabled. You can now play exclusively using Steam to connect, or exclusively use Epic Online Services, as well as choose to have Crossplay between both platforms.