EOS: how to refresh access token? After I login, it only works for 2 hours, then the game freezes

[JediKnightChan]

@JediKnightChan

[/Script/OnlineSubsystemEOS.EOSSettings]
CacheDir = CacheDir
DefaultArtifactName = DefaultArtifact
TickBudgetInMilliseconds = 0
bEnableOverlay = False
bEnableSocialOverlay = False
bShouldEnforceBeingLaunchedByEGS = False
TitleStorageReadChunkLength = 0
+Artifacts = (ArtifactName="DefaultArtifact",ClientId="...",ClientSecret="....",ProductId="....",SandboxId="...",DeploymentId="....",EncryptionKey="...")
bUseEAS = False
bUseEOSConnect = False
bMirrorStatsToEOS = False
bMirrorAchievementsToEOS = False
bUseEOSSessions = False
bMirrorPresenceToEAS = False

[OnlineSubsystemEOS]
bEnabled=true

[OnlineSubsystem]
DefaultPlatformService=EOS

[/Script/Engine.GameEngine]
+NetDriverDefinitions = (DefName="GameNetDriver",DriverClassName="OnlineSubsystemEOS.NetDriverEOS",DriverClassNameFallback="OnlineSubsystemUtils.IpNetDriver")

[/Script/OnlineSubsystemEOS.NetDriverEOS]
bIsUsingP2PSockets=true

Need to change bUseEAS from False to True and add NativePlatformService=EOS to [OnlineSubsystem]