diff --git a/CollapseLauncher/Classes/GameManagement/GameSettings/StarRail/RegistryClass/Model.cs b/CollapseLauncher/Classes/GameManagement/GameSettings/StarRail/RegistryClass/Model.cs
index fbac6b5a4..a6d0521f5 100644
--- a/CollapseLauncher/Classes/GameManagement/GameSettings/StarRail/RegistryClass/Model.cs
+++ b/CollapseLauncher/Classes/GameManagement/GameSettings/StarRail/RegistryClass/Model.cs
@@ -7,7 +7,6 @@
 using System;
 using System.Collections.Generic;
 using System.Text;
-using System.Threading.Tasks;
 using static CollapseLauncher.GameSettings.Base.SettingsBase;
 using static Hi3Helper.Logger;
 
diff --git a/CollapseLauncher/Classes/GameManagement/GameSettings/Universal/RegistryClass/CollapseMiscSetting.cs b/CollapseLauncher/Classes/GameManagement/GameSettings/Universal/RegistryClass/CollapseMiscSetting.cs
index 37f66920a..9498d77ca 100644
--- a/CollapseLauncher/Classes/GameManagement/GameSettings/Universal/RegistryClass/CollapseMiscSetting.cs
+++ b/CollapseLauncher/Classes/GameManagement/GameSettings/Universal/RegistryClass/CollapseMiscSetting.cs
@@ -109,7 +109,6 @@ public bool UseCustomRegionBG
         /// The path of the custom BG for each region
         /// </summary>
         public string? CustomRegionBGPath { get; set; }
-#nullable restore
 
         #endregion
 
diff --git a/CollapseLauncher/XAMLs/MainApp/MainPage.xaml.cs b/CollapseLauncher/XAMLs/MainApp/MainPage.xaml.cs
index 517edd67d..3fc9b1280 100644
--- a/CollapseLauncher/XAMLs/MainApp/MainPage.xaml.cs
+++ b/CollapseLauncher/XAMLs/MainApp/MainPage.xaml.cs
@@ -523,7 +523,7 @@ internal async void ChangeBackgroundImageAsRegionAsync(bool ShowLoadingMsg = fal
             // Check if Regional Custom BG is enabled and available
             if (isUseCustomPerRegionBg)
             {
-                var regionBgPath = ((IGameSettingsUniversal)currentGameProperty?._GameSettings)?.SettingsCollapseMisc?.CustomRegionBGPath;
+                var regionBgPath = ((IGameSettingsUniversal)currentGameProperty._GameSettings)?.SettingsCollapseMisc?.CustomRegionBGPath;
                 if (!string.IsNullOrEmpty(regionBgPath) && File.Exists(regionBgPath))
                 {
                     if (BackgroundMediaUtility.GetMediaType(regionBgPath) == BackgroundMediaUtility.MediaType.StillImage)
diff --git a/CollapseLauncher/XAMLs/MainApp/Pages/GameSettingsPages/StarRailGameSettingsPage.xaml.cs b/CollapseLauncher/XAMLs/MainApp/Pages/GameSettingsPages/StarRailGameSettingsPage.xaml.cs
index 060b2bb3c..48a713cd4 100644
--- a/CollapseLauncher/XAMLs/MainApp/Pages/GameSettingsPages/StarRailGameSettingsPage.xaml.cs
+++ b/CollapseLauncher/XAMLs/MainApp/Pages/GameSettingsPages/StarRailGameSettingsPage.xaml.cs
@@ -17,7 +17,6 @@
     using System.Diagnostics.CodeAnalysis;
     using System.IO;
     using System.Numerics;
-    using System.Threading.Tasks;
     using Windows.UI;
     using static Hi3Helper.Locale;
     using static Hi3Helper.Logger;
diff --git a/CollapseLauncher/XAMLs/MainApp/Pages/SettingsPage.xaml.cs b/CollapseLauncher/XAMLs/MainApp/Pages/SettingsPage.xaml.cs
index 1d0a9abb6..c81315583 100644
--- a/CollapseLauncher/XAMLs/MainApp/Pages/SettingsPage.xaml.cs
+++ b/CollapseLauncher/XAMLs/MainApp/Pages/SettingsPage.xaml.cs
@@ -14,7 +14,6 @@
     using CollapseLauncher.Statics;
     using CommunityToolkit.WinUI;
     using Hi3Helper;
-    using Hi3Helper.Data;
     using Hi3Helper.Shared.ClassStruct;
     using Hi3Helper.Shared.Region;
     using Microsoft.UI.Xaml;
@@ -430,9 +429,9 @@ private async void SelectBackgroundImg(object sender, RoutedEventArgs e)
                 {
                     BackgroundImgChanger.ChangeBackground(LauncherMetadataHelper.CurrentMetadataConfig.GameLauncherApi.GameBackgroundImgLocal, null, true, true, true);
                 }
-                else if (!string.IsNullOrEmpty(((IGameSettingsUniversal)currentGameProperty?._GameSettings)?.SettingsCollapseMisc?.CustomRegionBGPath))
+                else if (!string.IsNullOrEmpty(((IGameSettingsUniversal)currentGameProperty._GameSettings)?.SettingsCollapseMisc?.CustomRegionBGPath))
                 {
-                    currentMediaType = BackgroundMediaUtility.GetMediaType(((IGameSettingsUniversal)currentGameProperty?._GameSettings)?.SettingsCollapseMisc?.CustomRegionBGPath);
+                    currentMediaType = BackgroundMediaUtility.GetMediaType(((IGameSettingsUniversal)currentGameProperty._GameSettings)?.SettingsCollapseMisc?.CustomRegionBGPath);
                 }
                 
                 if (currentMediaType == MediaType.Media)
@@ -533,7 +532,7 @@ private bool IsBGCustom
 
                     ToggleCustomBgButtons();
                 }
-                else if (isUseRegionCustomBG && value)
+                else if (isUseRegionCustomBG)
                 {
                     string currentRegionCustomBg = ((IGameSettingsUniversal)currentGameProperty._GameSettings).SettingsCollapseMisc.CustomRegionBGPath;
                     LauncherMetadataHelper.CurrentMetadataConfig.GameLauncherApi.GameBackgroundImgLocal = currentRegionCustomBg;
@@ -543,7 +542,7 @@ private bool IsBGCustom
                 }
                 else
                 {
-                    string BGPath = GetAppConfigValue("CustomBGPath").ToString();
+                    var BGPath = GetAppConfigValue("CustomBGPath").ToString();
                     if (string.IsNullOrEmpty(BGPath))
                     {
                         LauncherMetadataHelper.CurrentMetadataConfig.GameLauncherApi.GameBackgroundImgLocal = AppDefaultBG;