Hi All,
Ok so this is still an issue even on official servers, my Crewmate has been unable to connect to either of the EU servers only, for over a week now. They just do not exist according to his game client, he can still see the NA servers however and connect with no issue, though that is no good as we are setup on EU PVE.
We have been over everything from reinstalling the game and steam itself, changing IP via VPN and mobile tethering, waiting for patches to hopefully fix this like it has in the past for some. There isn't really anything else I can think to try at the client end.
This same issue has as i have been told existed in Ark as well but not other Unreal 4 games that I have seen myself.
If anyone else has any useful suggestions on fixes or is also suffering from this issue then please speak up.