I created server using Steam Advanced Session but than i am trying to connect to invite steam says you are trying to connect to 2 diffrent games. Close your game and open right game.
Subsystem Settings
[OnlineSubsystem]
DefaultPlatformService=Steam
PollingIntervalInMs=20
[OnlineSubsystemSteam]
bEnabled=True
SteamDevAppId=480
GameServerQueryPort=27015
bRelaunchInSteam=False
GameVersion=480
bVACEnabled=1
bAllowP2PPacketRelay=True
P2PConnectionTimeout=90
[/Script/OnlineSubsystemSteam.SteamNetDriver]
NetConnectionClassName=/Script/OnlineSubsystemSteam.SteamNetConnection
[/Script/Engine.GameEngine]
NetDriverDefinitions=(DefName="GameNetDriver",DriverClassName="OnlineSubsystemSteam.SteamNetDriver",DriverClassNameFallback="OnlineSubsystemUtils.IpNetDriver")