Even if you do not call CreateSession (), it will work well if you enter IP and connect to the dedicated server.
Why create a session on a dedicated server?
I used Google Translator. Thank you
I believe if you have a dedicated server the session is automatically created for you. I think you only need to create a session manually when the game is being hosted by another player. Someone else feel free to correct me if I’m wrong, I’m new to UE4.