I was wondering if it still displays your friends that are playing at the main menu because I’ve never seen any and I know that they are online.
For some reason the game defaults you as Offline every time you start the game. Open your Network connection setting, on PS4 it’s the touch pad, and select online friends only. Then you can see your friends playing. But they have to do the same for you to join.
If youre on Xbox One and you turn off your console when the game is still working, itll turn your game into “Offline Mode”, all you have to do is hit start and put yourself back online and start looting!