xbox multiplayer

Hi,
we are developing a game with UE5 that requires multiplayer functionality on xbox (creating/joining sessions etc.). I have tried to make the shooter game example work with our project settings but without success. it successfully creates a session but finding a session returns an empty array [Response Body]: {“results”:[]}
here is our XSXEngine.ini for the shooter game example
[Core.Log]
LogOnline=verbose

[OnlineSubsystemGDK]
AchievementMode=2013
!AutoSubscribePresenceStats=ClearArray
+AutoSubscribePresenceStats=“Achievement.AchievementIndex.8”
+AutoSubscribePresenceStats=“Achievement.AchievementIndex.9”
+AutoSubscribePresenceStats=“Deaths”
+AutoSubscribePresenceStats=“GameProgress”
+AutoSubscribePresenceStats=“HighScore”
+AutoSubscribePresenceStats=“HighScore.MapNameString.Highrise”
+AutoSubscribePresenceStats=“HighScore.MapNameString.Sanctuary”
+AutoSubscribePresenceStats=“Kills”
+AutoSubscribePresenceStats=“MinutesPlayed”
+AutoSubscribePresenceStats=“RoundsCompleted”
+AutoSubscribePresenceStats=“RoundsStarted”
+AutoSubscribePresenceStats=“SessionsCompleted”
+AutoSubscribePresenceStats=“SessionsCompleted.MapNameString.Highrise”
+AutoSubscribePresenceStats=“SessionsCompleted.MapNameString.Sanctuary”
+AutoSubscribePresenceStats=“SessionsCompleted.PlayerWon.0”
+AutoSubscribePresenceStats=“SessionsCompleted.PlayerWon.1”
+AutoSubscribePresenceStats=“SessionsStarted”
+AutoSubscribePresenceStats=“TotalScore”

[/Script/XSXPlatformEditor.XSXTargetSettings]
bAutoConfigureMessageTransport=True
MessageTransportSocketPort=6666
bDebugConsoleInputEnable=True
PersistentLocalStorage=0
bSuppressInitialChunkSizeWarnings=False
bUseForwardShading=False
ApplicationForegroundColor=Dark
ApplicationBackgroundColor=(B=64,G=0,R=0,A=0)
TitleId=
PrimaryServiceConfigId=
StoreId=
PackageName=
DefaultDisplayName=
PublisherName=CN=
MSAAppId=

[/Script/PlayFabParty.PlayFabPartyNetDriver]
NetConnectionClassName=“/Script/PlayFabParty.PlayFabPartyNetConnection”

[/Script/Engine.Engine]
!NetDriverDefinitions=ClearArray
+NetDriverDefinitions=(DefName=“GameNetDriver”,DriverClassName=“/Script/PlayFabParty.PlayFabPartyNetDriver”,DriverClassNameFallback=“/Script/PlayFabParty.PlayFabPartyNetDriver”)
+NetDriverDefinitions=(DefName=“BeaconNetDriver”,DriverClassName=“/Script/PlayFabParty.PlayFabPartyNetDriver”,DriverClassNameFallback=“/Script/PlayFabParty.PlayFabPartyNetDriver”)
+NetDriverDefinitions=(DefName=“DemoNetDriver”,DriverClassName=“/Script/Engine.DemoNetDriver”,DriverClassNameFallback=“/Script/Engine.DemoNetDriver”)

[PlayFab]
AppId=
LoginFailureDelaySeconds=15
LoginRefreshDelaySeconds=7200

Here is our game session template named GameSession (should be default for UE):
{
“constants”: {
“system”: {
“version”: 1,
“maxMembersCount”: 12,
“visibility”: “open”,
“capabilities”: {
“connectivity”: true,
“gameplay” : true,
“userAuthorizationStyle”: false
},
“memberInitialization”: {
“membersNeededToStart”: 1
}
},
“custom”: {}
}
}
we created test accounts that are assigned to correct sandbox (the same as used by devkits).
could you please advice if our setup is incorrect in some way or if we have missed some setup step.