Issues about joining a session with the Advance Session Steam plugin

I’m trying to use the Advance Session plugin and when I launch the game with 2 players in Stand Alone mode, I can create one using the CreateAdvancedSession node, and this works. But when I want to join with my oither screen, the number of session found is 0.

If I get this right it’s not a fail, I just don’t find the session.

I’ve added this to my DefaultEngine.ini :

[/Script/Engine.Engine]
!NetDriverDefinitions=ClearArray
+NetDriverDefinitions=(DefName=“GameNetDriver”,DriverClassName=“/Script/SteamSockets.SteamSocketsNetDriver”,DriverClassNameFallback=“/Script/OnlineSubsystemUtils.IpNetDriver”)

[OnlineSubsystem]
DefaultPlatformService=Steam

[OnlineSubsystemSteam]
bEnabled=true
SteamDevAppId=480

; If using Sessions
bInitServerOnClient=true

[/Script/SteamSockets.SteamSocketsNetDriver]
NetConnectionClassName=“/Script/SteamSockets.SteamSocketsNetConnection”.

This is the code I use :

This is in the game instance

This is in my widget (number print being 0)

If anyone has any idea that would help !