Steam Sockets join session error

Hello!, I’m trying to add multiplayer sessions from c++ without the Advance Sessions plugin. I can create a session without issues, but when I try to join another player, I get this warning and a subsequent error:

LogSteamSocketsAPI: Warning: SteamSockets API: Warning [P2P steamid:XXXXXX vport 7777] Relay candidates enabled by P2P_Transport_ICE_Enable, but P2P_TURN_ServerList is empty

LogNet: Error: UEngine::BroadcastNetworkFailure: FailureType = PendingConnectionFailure, ErrorString = Your connection to the host has been lost., Driver = Name:PendingNetDriver Def:GameNetDriver SteamSocketsNetDriver_XXXXXX.

This is how my DefaultEngine.ini is setup:

[/Script/Engine.NetworkSettings]

DefaultNetDriverName=“SteamSocketsNetDriver”

[/Script/Engine.GameEngine]

!NetDriverDefinitions=ClearArray

+NetDriverDefinitions=(DefName=“GameNetDriver”,DriverClassName=“/Script/SteamSockets.SteamSocketsNetDriver”,DriverClassNameFallback=“OnlineSubsystemUtils.IpNetDriver”)

[OnlineSubsystem]

DefaultPlatformService=Steam

VoiceNotificationDelta=0.2

bHasVoiceEnabled=True

[OnlineSubsystemSteam]

bEnabled=True

SteamDevAppId=480

GameServerQueryPort=27015

bUsesPresence=True

bUseLobbiesIfAvailable=True

bUseSteamNetworking=True

bAllowP2PPacketRelay=True

[/Script/OnlineSubsystem.IpNetDriver]

ConnectionTimeout=60.0

[/Script/OnlineSubsystemSteam.SteamNetDriver]

NetConnectionClassName=OnlineSubsystemSteam.SteamNetConnection

P2P_Transport_ICE_Enable=False

P2P_Transport_STUN_Enable=False

P2P_Transport_Relay_Enable=False

[ConsoleVariables]

net.CurrentHandshakeVersion=2

net.MinHandshakeVersion=2

net.VerifyNetSessionID=0

net.VerifyNetClientID=0

[ConsoleVariables]

net.CurrentHandshakeVersion=2

net.MinHandshakeVersion=2

Thanks in advance for the help!