>>724784520
No he's talking about the different versions you can choose in the launcher. There's a legacy version which is the static universe, I think that also has old graphics, there's the modern version without the on-foot DLC and the modern version with on-foot DLC. Both share the same universe that's being updated in real time, but are completely different versions so you can't play together unless your friend with the DLC changes to the non-DLC version in the launcher
>>724784268
The co-op in ED is abyssmal, you didn't miss out on much