diff --git a/ModpackUpdater.Apps.Client.Gui/MainViewModel.cs b/ModpackUpdater.Apps.Client.Gui/MainViewModel.cs
index 61a1a6e..c64ca6c 100644
--- a/ModpackUpdater.Apps.Client.Gui/MainViewModel.cs
+++ b/ModpackUpdater.Apps.Client.Gui/MainViewModel.cs
@@ -24,7 +24,6 @@ public partial class MainViewModel : ObservableObject
     private readonly UpdateCheckOptions updateOptions = new();
     private ModpackInfo modpackInfo = new();
     private ModpackConfig updateConfig = new();
-    private ModpackFeatures? features;
     private UpdateCheckResult? lastUpdateCheckResult;
     
     [ObservableProperty] private string? minecraftProfileFolder;
@@ -99,7 +98,7 @@ public partial class MainViewModel : ObservableObject
 
     private bool AllowExtras()
     {
-        return features != null && features.IsEnabled(ModpackFeatures.FeatureAllowExtas, new AllowExtrasFeatureContext(modpackInfo));
+        return !string.IsNullOrWhiteSpace(modpackInfo.ExtrasKey) && updateConfig.ExtrasKeys.Contains(modpackInfo.ExtrasKey);
     }
 
     public void LoadProfileToUi()
@@ -191,15 +190,14 @@ public partial class MainViewModel : ObservableObject
             // Ignore
         }
 
-        features = new(updateConfig);
         modpackInfo.ExtrasKey = InstallKey?.Trim();
-        if (!features.IsInvalid() && !string.IsNullOrWhiteSpace(modpackInfo.ExtrasKey) && !AllowExtras())
+        if (!string.IsNullOrWhiteSpace(modpackInfo.ExtrasKey) && !AllowExtras())
         {
             SetStatus(GeneralLangRes.InstallationKeyNotValid, AppGlobals.Symbols.GetImageSource(AppSymbols.general_warning_sign));
             return false;
         }
 
-        CanUseExtrasKey = CanUseExtrasKey = !string.IsNullOrWhiteSpace(updateConfig.UnleashApiUrl);
+        CanUseExtrasKey = updateConfig.ExtrasKeys.Count > 0;
 
         if (string.IsNullOrWhiteSpace(MinecraftProfileFolder) /*|| modpackInfo.Valid*/)
         {
diff --git a/ModpackUpdater.Apps.Client/Program.cs b/ModpackUpdater.Apps.Client/Program.cs
index 3075dd8..051538b 100644
--- a/ModpackUpdater.Apps.Client/Program.cs
+++ b/ModpackUpdater.Apps.Client/Program.cs
@@ -39,13 +39,12 @@ public static class Program
     {
         var info = ModpackInfo.TryLoad(updateOptions.ProfileFolder);
         var config = ModpackConfig.LoadFromUrl(CheckModpackConfigUrl(updateOptions.ModpackConfig!, info));
-        var features = new ModpackFeatures(config);
 
         // Check features
         if (!string.IsNullOrWhiteSpace(updateOptions.ExtrasKey))
             info.ExtrasKey = updateOptions.ExtrasKey;
         if (!string.IsNullOrWhiteSpace(info.ExtrasKey))
-            updateOptions.IncludeExtras = features.IsEnabled(ModpackFeatures.FeatureAllowExtas, new AllowExtrasFeatureContext(info));
+            updateOptions.IncludeExtras = !string.IsNullOrWhiteSpace(info.ExtrasKey) && config.ExtrasKeys.Contains(info.ExtrasKey);
 
         // Check for update
         var installer = new ModpackInstaller(config, info)
diff --git a/ModpackUpdater.Manager/ModpackFeatures.cs b/ModpackUpdater.Manager/ModpackFeatures.cs
deleted file mode 100644
index b0291f9..0000000
--- a/ModpackUpdater.Manager/ModpackFeatures.cs
+++ /dev/null
@@ -1,81 +0,0 @@
-using System.Diagnostics.CodeAnalysis;
-using Unleash;
-using Unleash.ClientFactory;
-
-namespace ModpackUpdater.Manager;
-
-public class ModpackFeatures(ModpackConfig modpackConfig)
-{
-    private IUnleash? api;
-    private UnleashContext context;
-    private UnleashSettings settings;
-
-    public static string FeatureAllowExtas => "allow-extras";
-
-    ~ModpackFeatures()
-    {
-        api?.Dispose();
-    }
-
-    public bool IsEnabled(string feature)
-    {
-        return IsEnabled(feature, null);
-    }
-
-    public bool IsEnabled(string feature, AppFeatureContext context)
-    {
-        return CheckFeature(feature, context);
-    }
-
-    public bool IsInvalid()
-    {
-        return string.IsNullOrWhiteSpace(modpackConfig.UnleashApiUrl) || string.IsNullOrWhiteSpace(modpackConfig.UnleashInstanceId);
-    }
-
-    [MemberNotNullWhen(true, nameof(api))]
-    private bool InitializeApi()
-    {
-        if (api != null
-            || string.IsNullOrWhiteSpace(modpackConfig.UnleashApiUrl)
-            || string.IsNullOrWhiteSpace(modpackConfig.UnleashInstanceId))
-            return api != null;
-        
-        settings = new UnleashSettings
-        {
-            AppName = "Modpack Updater",
-            UnleashApi = new Uri(modpackConfig.UnleashApiUrl),
-            FetchTogglesInterval = TimeSpan.FromSeconds(0),
-            InstanceTag = modpackConfig.UnleashInstanceId,
-        };
-
-        api = new UnleashClientFactory().CreateClient(settings, synchronousInitialization: true);
-
-        return api != null;
-    }
-
-    private bool CheckFeature(string name, AppFeatureContext context)
-    {
-        return InitializeApi() && api.IsEnabled(name, GetContext(context));
-    }
-
-    private UnleashContext GetContext(AppFeatureContext ccontext)
-    {
-        context ??= new();
-        context.CurrentTime = DateTime.Now;
-        ccontext?.Apply(context);
-        return context;
-    }
-}
-
-public abstract class AppFeatureContext
-{
-    public abstract void Apply(UnleashContext context);
-}
-
-public class AllowExtrasFeatureContext(ModpackInfo info) : AppFeatureContext
-{
-    public override void Apply(UnleashContext context)
-    {
-        context.UserId = info.ExtrasKey;
-    }
-}
\ No newline at end of file
diff --git a/ModpackUpdater.Manager/ModpackInstaller.cs b/ModpackUpdater.Manager/ModpackInstaller.cs
index 1999a99..ca9d3c8 100644
--- a/ModpackUpdater.Manager/ModpackInstaller.cs
+++ b/ModpackUpdater.Manager/ModpackInstaller.cs
@@ -169,9 +169,7 @@ public class ModpackInstaller(ModpackConfig updateConfig, ModpackInfo modpackInf
         foreach (InstallAction iaction in checkResult.Actions)
         {
             var destFilePath = iaction.GetDestPath(modpackInfo.LocalPath);
-            var sourceUrl = updateConfig.PreferDirectLinks && !string.IsNullOrWhiteSpace(iaction.SourceUrl)
-                   ? iaction.GetSourceUrl(checkResult.LatestVersion, overwriteVersion: OverwriteVersion)
-                   : await factory.ResolveSourceUrl(iaction, targetVersion: checkResult.LatestVersion, overwriteVersion: OverwriteVersion);
+            var sourceUrl = iaction.GetSourceUrl(checkResult.LatestVersion, overwriteVersion: OverwriteVersion);
 
             if (iaction is UpdateAction uaction)
             {
diff --git a/ModpackUpdater/ModpackConfig.cs b/ModpackUpdater/ModpackConfig.cs
index c95841e..f87699c 100644
--- a/ModpackUpdater/ModpackConfig.cs
+++ b/ModpackUpdater/ModpackConfig.cs
@@ -9,9 +9,7 @@ public class ModpackConfig
     public string? Name { get; set; }
     public string? UpdateUrl { get; set; }
     public string? InstallUrl { get; set; }
-    public string? UnleashApiUrl { get; set; }
-    public string? UnleashInstanceId { get; set; }
-    public bool PreferDirectLinks { get; set; }
+    public List<string> ExtrasKeys { get; } = [];
     public string? MinecraftVersion { get; set; }
     public string? RefTag { get; set; }