diff --git a/Runtime/Code/SDK/GuruSDK.cs b/Runtime/Code/SDK/GuruSDK.cs
index 04f98e0..1930493 100644
--- a/Runtime/Code/SDK/GuruSDK.cs
+++ b/Runtime/Code/SDK/GuruSDK.cs
@@ -345,8 +345,8 @@ namespace Guru
                                 _appServicesConfig.app_settings.terms_url,
                                 _appServicesConfig.app_settings.android_store,
                                 _appServicesConfig.app_settings.ios_store, 
-                                _appServicesConfig.parameters.using_uuid.ToString().ToLower(),
-                                _appServicesConfig.parameters.cdn_host ?? "");
+                                _appServicesConfig.parameters?.using_uuid ?? false,
+                                _appServicesConfig.parameters?.cdn_host ?? "");
                             
                             _appBundleId = _appServicesConfig.app_settings.bundle_id; // 配置预设的 BundleId
                         }