diff --git a/src/DRS9.Dashboard.Application/Services/RotatorItemService.cs b/src/DRS9.Dashboard.Application/Services/RotatorItemService.cs
index 3d6a1f0..1dcb333 100644
--- a/src/DRS9.Dashboard.Application/Services/RotatorItemService.cs
+++ b/src/DRS9.Dashboard.Application/Services/RotatorItemService.cs
@@ -153,17 +153,31 @@ public class RotatorItemService
             .Where(ri => ri.ApplicationId == applicationId)
             .ToListAsync();
 
+        Console.WriteLine($"=== ReorderAsync called ===");
+        Console.WriteLine($"ApplicationId: {applicationId}");
+        Console.WriteLine($"Received itemIds: [{string.Join(", ", itemIds)}]");
+        Console.WriteLine($"Total items in DB: {items.Count}");
+
         for (int i = 0; i < itemIds.Count; i++)
         {
             var item = items.FirstOrDefault(x => x.Id == itemIds[i]);
             if (item != null)
             {
+                var oldOrder = item.Order;
                 item.Order = i + 1;
                 item.UpdatedAt = DateTime.UtcNow;
+                Console.WriteLine($"  Item {item.Id}: Order {oldOrder} -> {item.Order}");
+            }
+            else
+            {
+                Console.WriteLine($"  WARNING: Item with ID {itemIds[i]} not found!");
             }
         }
 
-        await _context.SaveChangesAsync();
+        var affected = await _context.SaveChangesAsync();
+        Console.WriteLine($"SaveChangesAsync affected: {affected} rows");
+        Console.WriteLine($"=== ReorderAsync completed ===");
+
         return true;
     }
 }
diff --git a/src/DRS9.Dashboard.Server/Components/Pages/Applications.razor b/src/DRS9.Dashboard.Server/Components/Pages/Applications.razor
index a699530..b0bfd2a 100644
--- a/src/DRS9.Dashboard.Server/Components/Pages/Applications.razor
+++ b/src/DRS9.Dashboard.Server/Components/Pages/Applications.razor
@@ -205,8 +205,9 @@
                                     @for (int i = 0; i < _rotatorItems.Count; i++)
                                     {
                                         var item = _rotatorItems[i];
-                                        var isFirst = (i == 0);
-                                        var isLast = (i == _rotatorItems.Count - 1);
+                                        var index = i;
+                                        var isFirst = (index == 0);
+                                        var isLast = (index == _rotatorItems.Count - 1);
                                         <div class="list-group-item d-flex justify-content-between align-items-center">
                                             <div class="d-flex align-items-center">
                                                 <i class="bi @GetRotatorItemIcon(item.ItemType) me-2"></i>
@@ -219,10 +220,10 @@
                                                 </div>
                                             </div>
                                             <div class="btn-group">
-                                                <button class="btn btn-sm btn-outline-secondary" @onclick="@(() => MoveRotatorItemUp(item, i))" disabled="@isFirst">
+                                                <button class="btn btn-sm btn-outline-secondary" @onclick="@(() => MoveRotatorItemUp(item, index))" disabled="@isFirst">
                                                     <i class="bi bi-arrow-up"></i>
                                                 </button>
-                                                <button class="btn btn-sm btn-outline-secondary" @onclick="@(() => MoveRotatorItemDown(item, i))" disabled="@isLast">
+                                                <button class="btn btn-sm btn-outline-secondary" @onclick="@(() => MoveRotatorItemDown(item, index))" disabled="@isLast">
                                                     <i class="bi bi-arrow-down"></i>
                                                 </button>
                                                 <button class="btn btn-sm btn-outline-danger" @onclick="@(() => DeleteRotatorItem(item))">
@@ -510,7 +511,27 @@
 
     private async Task MoveRotatorItemUp(RotatorItemDto item, int index)
     {
-        if (_editingRotatorApp == null || index <= 0 || index >= _rotatorItems.Count) return;
+        await JSRuntime.InvokeVoidAsync("console.log", $"=== MoveRotatorItemUp ===");
+        await JSRuntime.InvokeVoidAsync("console.log", $"Index: {index}, Item ID: {item.Id}");
+        await JSRuntime.InvokeVoidAsync("console.log", $"EditingApp: {_editingRotatorApp?.Id}");
+        await JSRuntime.InvokeVoidAsync("console.log", $"ItemCount: {_rotatorItems.Count}");
+        await JSRuntime.InvokeVoidAsync("console.log", $"Current order: [{string.Join(", ", _rotatorItems.Select(x => x.Id))}]");
+
+        if (_editingRotatorApp == null)
+        {
+            await JSRuntime.InvokeVoidAsync("console.log", $"BLOCKED: EditingApp is null");
+            return;
+        }
+        if (index <= 0)
+        {
+            await JSRuntime.InvokeVoidAsync("console.log", $"BLOCKED: Index {index} <= 0");
+            return;
+        }
+        if (index >= _rotatorItems.Count)
+        {
+            await JSRuntime.InvokeVoidAsync("console.log", $"BLOCKED: Index {index} >= Count {_rotatorItems.Count}");
+            return;
+        }
 
         // 创建新的顺序列表：交换两个相邻项的位置
         var newOrder = _rotatorItems.ToList();
@@ -520,15 +541,37 @@
 
         // 获取按照新顺序排列的 ID 列表
         var itemIds = newOrder.Select(x => x.Id).ToList();
+        await JSRuntime.InvokeVoidAsync("console.log", $"New order: [{string.Join(", ", itemIds)}]");
 
         // 更新到服务器
-        await ApiClient.ReorderRotatorItemsAsync(_editingRotatorApp.Id, itemIds);
+        var result = await ApiClient.ReorderRotatorItemsAsync(_editingRotatorApp.Id, itemIds);
+        await JSRuntime.InvokeVoidAsync("console.log", $"API result: {result}");
+
         await LoadRotatorItems(_editingRotatorApp.Id);
+        await JSRuntime.InvokeVoidAsync("console.log", $"Loaded order: [{string.Join(", ", _rotatorItems.Select(x => x.Id))}]");
     }
 
     private async Task MoveRotatorItemDown(RotatorItemDto item, int index)
     {
-        if (_editingRotatorApp == null || index < 0 || index >= _rotatorItems.Count - 1) return;
+        await JSRuntime.InvokeVoidAsync("console.log", $"=== MoveRotatorItemDown ===");
+        await JSRuntime.InvokeVoidAsync("console.log", $"Index: {index}, Item ID: {item.Id}");
+        await JSRuntime.InvokeVoidAsync("console.log", $"Current order: [{string.Join(", ", _rotatorItems.Select(x => x.Id))}]");
+
+        if (_editingRotatorApp == null)
+        {
+            await JSRuntime.InvokeVoidAsync("console.log", $"BLOCKED: EditingApp is null");
+            return;
+        }
+        if (index < 0)
+        {
+            await JSRuntime.InvokeVoidAsync("console.log", $"BLOCKED: Index {index} < 0");
+            return;
+        }
+        if (index >= _rotatorItems.Count - 1)
+        {
+            await JSRuntime.InvokeVoidAsync("console.log", $"BLOCKED: Index {index} >= Count-1 {_rotatorItems.Count - 1}");
+            return;
+        }
 
         // 创建新的顺序列表：交换两个相邻项的位置
         var newOrder = _rotatorItems.ToList();
@@ -538,10 +581,14 @@
 
         // 获取按照新顺序排列的 ID 列表
         var itemIds = newOrder.Select(x => x.Id).ToList();
+        await JSRuntime.InvokeVoidAsync("console.log", $"New order: [{string.Join(", ", itemIds)}]");
 
         // 更新到服务器
-        await ApiClient.ReorderRotatorItemsAsync(_editingRotatorApp.Id, itemIds);
+        var result = await ApiClient.ReorderRotatorItemsAsync(_editingRotatorApp.Id, itemIds);
+        await JSRuntime.InvokeVoidAsync("console.log", $"API result: {result}");
+
         await LoadRotatorItems(_editingRotatorApp.Id);
+        await JSRuntime.InvokeVoidAsync("console.log", $"Loaded order: [{string.Join(", ", _rotatorItems.Select(x => x.Id))}]");
     }
 
     private async Task TriggerFileUpload()
diff --git a/src/DRS9.Dashboard.Server/appsettings.json b/src/DRS9.Dashboard.Server/appsettings.json
index bb48fc9..199fd47 100644
--- a/src/DRS9.Dashboard.Server/appsettings.json
+++ b/src/DRS9.Dashboard.Server/appsettings.json
@@ -8,7 +8,7 @@
   },
   "AllowedHosts": "*",
   "ConnectionStrings": {
-    "DefaultConnection": "Data Source=dashboard.db"
+    "DefaultConnection": "Data Source=data.db"
   },
   "Jwt": {
     "Key": "DRS9_DASHBOARD_SECRET_KEY_2026_CHANGE_THIS_IN_PRODUCTION",
diff --git a/src/DRS9.Dashboard.Server/dashboard.db b/src/DRS9.Dashboard.Server/dashboard.db
deleted file mode 100644
index d3a9ce1..0000000
Binary files a/src/DRS9.Dashboard.Server/dashboard.db and /dev/null differ