diff --git a/app/Plugins/Total/Discount/AppConfig.php b/app/Plugins/Total/Discount/AppConfig.php
index 2220d5e9..e614ea20 100644
--- a/app/Plugins/Total/Discount/AppConfig.php
+++ b/app/Plugins/Total/Discount/AppConfig.php
@@ -138,11 +138,9 @@ public function getData()
         $totalMethod = session('totalMethod', []);
         $discount = $totalMethod['Discount']??'';
 
-        $check = json_decode((new FrontController)->check($discount, $uID), true);
+        $check = (new FrontController)->check($discount, $uID);
 
         if (!empty($discount) && !$check['error']) {
-            $storeID = $check['content']['store_id'];
-            //Get cart item with group store id
             $subtotalWithTax = ShopCurrency::sumCartCheckout()['subTotalWithTax'] ?? null;
             if (!$subtotalWithTax) {
                 return $arrData;
@@ -152,8 +150,13 @@ public function getData()
             } else {
                 $value = sc_currency_value($check['content']['reward']);
             }
-            //Add info for earch store
-            $dataStore[$storeID]['value'] = $value;
+            if (sc_config_global('MultiVendorPro') || sc_config_global('MultiStorePro')) {
+                //Add info for earch store
+                $storeID = $check['content']['store_id'];
+                $dataStore[$storeID]['value'] = $value;
+            } else {
+                $dataStore = [];
+            }
 
             $arrData = array(
                 'title'      => '<b>' . $this->title . ':</b> ' . $discount . '',
@@ -179,11 +182,6 @@ public function getData()
      *
      */
     public function endApp($data = []) {
-        $customer = session('customer');
-        $orderID = $data['orderID'] ?? '';
-        $code = $data['code'] ?? '';
-        $uID = $customer->id ?? 0;
-        $msg = 'Order #'.$orderID;
-        return (new FrontController)->apply($code, $uID, $msg);
+        return;
     }
 }
diff --git a/app/Plugins/Total/Discount/Controllers/FrontController.php b/app/Plugins/Total/Discount/Controllers/FrontController.php
index b565d55a..4bdb0df0 100644
--- a/app/Plugins/Total/Discount/Controllers/FrontController.php
+++ b/app/Plugins/Total/Discount/Controllers/FrontController.php
@@ -96,19 +96,19 @@ public function check($code, $uID = null)
         $uID = (int) $uID;
         $promocode = (new Discount)->getPromotionByCode($code);
         if ($promocode === null) {
-            return json_encode(['error' => 1, 'msg' => "error_code_not_exist"]);
+            return ['error' => 1, 'msg' => sc_language_render($this->plugin->pathPlugin.'::lang.process.invalid')];
         }
         //Check user  login
         if ($promocode->login && !$uID) {
-            return json_encode(['error' => 1, 'msg' => "error_login"]);
+            return ['error' => 1, 'msg' => sc_language_render($this->plugin->pathPlugin.'::lang.process.must_login')];
         }
 
         if ($promocode->limit == 0 || $promocode->limit <= $promocode->used) {
-            return json_encode(['error' => 1, 'msg' => "error_code_cant_use"]);
+            return ['error' => 1, 'msg' => sc_language_render($this->plugin->pathPlugin.'::lang.process.over')];
         }
 
         if ($promocode->status == 0 || $promocode->isExpired()) {
-            return json_encode(['error' => 1, 'msg' => "error_code_expired_disabled"]);
+            return ['error' => 1, 'msg' => sc_language_render($this->plugin->pathPlugin.'::lang.process.expire')];
         }
         if ($promocode->login) {
             //check if this user has already used this code already
@@ -117,11 +117,10 @@ public function check($code, $uID = null)
                 $arrUsers[] = $value->pivot->customer_id;
             }
             if (in_array($uID, $arrUsers)) {
-                return json_encode(['error' => 1, 'msg' => "error_user_used"]);
+                return ['error' => 1, 'msg' => sc_language_render($this->plugin->pathPlugin.'::lang.process.used')];
             }
         }
-
-        return json_encode(['error' => 0, 'content' => $promocode]);
+        return ['error' => 0, 'content' => $promocode];
     }
 
 /**
@@ -135,11 +134,10 @@ public function apply($code, $uID = null, $msg = null)
     {
         //check code valid
         $checkCode = $this->check($code, $uID);
-        $check = json_decode($checkCode, true);
 
-        if ($check['error'] === 0) {
+        if ($checkCode['error'] === 0) {
             $promocode = (new Discount)->getPromotionByCode($code);
-            if($promocode) {
+            if ($promocode) {
                 try {
                     // increment used
                     $promocode->used += 1;
@@ -149,12 +147,12 @@ public function apply($code, $uID = null, $msg = null)
                         'used_at' => Carbon::now(),
                         'log' => $msg,
                     ]);
-                    return json_encode(['error' => 0, 'content' => $promocode->load('users')]);
+                    return ['error' => 0, 'content' => $promocode->load('users')];
                 } catch (\Throwable $e) {
-                    return json_encode(['error' => 1, 'msg' => $e->getMessage()]);
+                    return ['error' => 1, 'msg' => $e->getMessage()];
                 }
             } else {
-                return json_encode(['error' => 1, 'msg' => 'error_code_not_exist']);
+                return ['error' => 1, 'msg' => sc_language_render($this->plugin->pathPlugin.'::lang.process.undefined')];
             }
 
         } else {
@@ -272,24 +270,10 @@ public function useDiscount()
         $html = '';
         $code = request('code');
         $uID = request('uID');
-        $check = json_decode($this->check($code, $uID), true);
+        $check = $this->check($code, $uID);
         if ($check['error'] == 1) {
             $error = 1;
-            if ($check['msg'] == 'error_code_not_exist') {
-                $msg = sc_language_render($this->plugin->pathPlugin.'::lang.process.invalid');
-            } elseif ($check['msg'] == 'error_code_cant_use') {
-                $msg = sc_language_render($this->plugin->pathPlugin.'::lang.process.over');
-            } elseif ($check['msg'] == 'error_code_expired_disabled') {
-                $msg = sc_language_render($this->plugin->pathPlugin.'::lang.process.expire');
-            } elseif ($check['msg'] == 'error_user_used') {
-                $msg = sc_language_render($this->plugin->pathPlugin.'::lang.process.used');
-            } elseif ($check['msg'] == 'error_uID_input') {
-                $msg = sc_language_render($this->plugin->pathPlugin.'::lang.process.customer_id_invalid');
-            } elseif ($check['msg'] == 'error_login') {
-                $msg = sc_language_render($this->plugin->pathPlugin.'::lang.process.must_login');
-            } else {
-                $msg = sc_language_render($this->plugin->pathPlugin.'::lang.process.undefined');
-            }
+            $msg = $check['msg'];
         } else {
             $content = $check['content'];
             if ($content['type'] === 1) {
diff --git a/app/Plugins/Total/Discount/Models/PluginModel.php b/app/Plugins/Total/Discount/Models/PluginModel.php
index 5926ae58..9d06c57b 100644
--- a/app/Plugins/Total/Discount/Models/PluginModel.php
+++ b/app/Plugins/Total/Discount/Models/PluginModel.php
@@ -63,11 +63,10 @@ public function install()
         });
 
         Schema::create($this->table_related, function (Blueprint $table) {
-            $table->integer('customer_id');
-            $table->integer('discount_id');
+            $table->integer('customer_id')->index();
+            $table->integer('discount_id')->index();
             $table->text('log')->nullable();
             $table->timestamp('used_at')->nullable();
-            $table->primary(['customer_id', 'discount_id']);
         });
         
 
diff --git a/app/Plugins/Total/Discount/Views/Admin.blade.php b/app/Plugins/Total/Discount/Views/Admin.blade.php
index 0b3d49d7..d3a9f18c 100644
--- a/app/Plugins/Total/Discount/Views/Admin.blade.php
+++ b/app/Plugins/Total/Discount/Views/Admin.blade.php
@@ -167,10 +167,10 @@
     
                             <div class="form-group row {{ $errors->has('shop_store') ? ' text-red' : '' }}">
                                 <label for="shop_store"
-                                    class="col-sm-2 col-form-label">{{ sc_language_render('multi_store.select_store') }}</label>
+                                    class="col-sm-2 col-form-label">{{ sc_language_render('admin.select_store') }}</label>
                                 <div class="col-sm-8">
                                     <select class="form-control shop_store select2" multiple="multiple"
-                                        data-placeholder="{{ sc_language_render('multi_store.select_store') }}" style="width: 100%;"
+                                        data-placeholder="{{ sc_language_render('admin.select_store') }}" style="width: 100%;"
                                         name="shop_store[]">
                                         <option value=""></option>
                                         @foreach (sc_get_list_code_store() as $k => $v)