diff --git a/main/inc/lib/course.lib.php b/main/inc/lib/course.lib.php
index 077a3c7fe4..430feaa554 100755
--- a/main/inc/lib/course.lib.php
+++ b/main/inc/lib/course.lib.php
@@ -4793,7 +4793,10 @@ class CourseManager
             // start buycourse validation
             // display the course price and buy button if the buycourses plugin is enabled and this course is configured
             $plugin = BuyCoursesPlugin::create();
-            $isThisCourseInSale = $plugin->buyCoursesForGridCatalogVerificator($course_info['real_id'], BuyCoursesPlugin::PRODUCT_TYPE_COURSE);
+            $isThisCourseInSale = $plugin->buyCoursesForGridCatalogValidator(
+                $course_info['real_id'],
+                BuyCoursesPlugin::PRODUCT_TYPE_COURSE
+            );
             if ($isThisCourseInSale) {
                 // set the price label
                 $my_course['price'] = $isThisCourseInSale['html'];
diff --git a/main/lp/lp_final_item.php b/main/lp/lp_final_item.php
index 237563429e..c6c8e8baa5 100644
--- a/main/lp/lp_final_item.php
+++ b/main/lp/lp_final_item.php
@@ -31,7 +31,7 @@ if (!$id && !$lpId) {
 
 // Certificate and Skills Premium with Service check
 $plugin = BuyCoursesPlugin::create();
-$checker = ($plugin->get('paypal_enable') || $plugin->get('transfer_enable') || $plugin->get('culqi_enable')) && $plugin->get('include_services');
+$checker = $plugin->isEnabled() && $plugin->get('include_services');
 
 if ($checker) {
     $userServiceSale = $plugin->getServiceSale(
diff --git a/main/session/about.php b/main/session/about.php
index ac4951b61f..162aa5a287 100644
--- a/main/session/about.php
+++ b/main/session/about.php
@@ -195,12 +195,17 @@ $template->assign(
 );
 
 $plugin = BuyCoursesPlugin::create();
-$checker = $plugin->get('paypal_enable') || $plugin->get('transfer_enable') || $plugin->get('culqi_enable');
-$sessionIsPremium = $plugin->getItemByProduct($sessionId, BuyCoursesPlugin::PRODUCT_TYPE_SESSION);
-
-if ($checker && $sessionIsPremium) {
-    Session::write('SessionIsPremium', true);
-    Session::write('sessionId', $sessionId);
+$checker = $plugin->isEnabled();
+
+if ($checker) {
+    $sessionIsPremium = $plugin->getItemByProduct(
+        $sessionId,
+        BuyCoursesPlugin::PRODUCT_TYPE_SESSION
+    );
+    if ($sessionIsPremium) {
+        Session::write('SessionIsPremium', true);
+        Session::write('sessionId', $sessionId);
+    }
 }
 
 $redirectToSession = api_get_configuration_value('allow_redirect_to_session_after_inscription_about');
diff --git a/main/template/default/auth/courses_categories.php b/main/template/default/auth/courses_categories.php
index 4631306053..35a07320ec 100755
--- a/main/template/default/auth/courses_categories.php
+++ b/main/template/default/auth/courses_categories.php
@@ -189,7 +189,7 @@ if ($showCourses && $action != 'display_sessions') {
             // start buycourse validation
             // display the course price and buy button if the buycourses plugin is enabled and this course is configured
             $plugin = BuyCoursesPlugin::create();
-            $isThisCourseInSale = $plugin->buyCoursesForGridCatalogVerificator(
+            $isThisCourseInSale = $plugin->buyCoursesForGridCatalogValidator(
                 $course['real_id'],
                 BuyCoursesPlugin::PRODUCT_TYPE_COURSE
             );
diff --git a/plugin/buycourses/src/buy_course_plugin.class.php b/plugin/buycourses/src/buy_course_plugin.class.php
index 1b7b7a5d97..3392502699 100644
--- a/plugin/buycourses/src/buy_course_plugin.class.php
+++ b/plugin/buycourses/src/buy_course_plugin.class.php
@@ -12,6 +12,7 @@ use Chamilo\CoreBundle\Entity\Course;
  * @author Alex Aragón <alex.aragon@beeznest.com>
  * @author Angel Fernando Quiroz Campos <angel.quiroz@beeznest.com>
  * @author José Loguercio Silva  <jose.loguercio@beeznest.com>
+ * @author Julio Montoya
  */
 class BuyCoursesPlugin extends Plugin
 {
@@ -49,16 +50,18 @@ class BuyCoursesPlugin extends Plugin
     const CULQI_PRODUCTION_TYPE = 'PRODUC';
 
     /**
-     *
-     * @return StaticPlugin
+     * @return BuyCoursesPlugin
      */
-    static function create()
+    public static function create()
     {
         static $result = null;
         return $result ? $result : $result = new self();
     }
 
-    protected function __construct()
+    /**
+     * BuyCoursesPlugin constructor.
+     */
+    public function __construct()
     {
         parent::__construct(
             '1.0',
@@ -69,6 +72,7 @@ class BuyCoursesPlugin extends Plugin
                 Imanol Losada - BeezNest (introduction of sessions purchase) <br/>
                 Angel Fernando Quiroz Campos - BeezNest (cleanup and new reports) <br/>
                 José Loguercio Silva - BeezNest (Payouts and buy Services)
+                Julio Montoya
             ",
             array(
                 'show_main_menu_tab' => 'boolean',
@@ -83,10 +87,19 @@ class BuyCoursesPlugin extends Plugin
         );
     }
 
+    /**
+     * Check if plugin is enabled
+     * @return bool
+     */
+    public function isEnabled()
+    {
+        return $this->get('paypal_enable') || $this->get('transfer_enable') || $this->get('culqi_enable');
+    }
+
     /**
      * This method creates the tables required to this plugin
      */
-    function install()
+    public function install()
     {
         $tablesToBeCompared = array(
             self::TABLE_PAYPAL,
@@ -117,7 +130,7 @@ class BuyCoursesPlugin extends Plugin
     /**
      * This method drops the plugin tables
      */
-    function uninstall()
+    public function uninstall()
     {
         $tablesToBeDeleted = array(
             self::TABLE_PAYPAL,
@@ -150,7 +163,8 @@ class BuyCoursesPlugin extends Plugin
      * @param int $productType course or session type
      * @return mixed bool|string html
      */
-    public function buyCoursesForGridCatalogVerificator($productId, $productType) {
+    public function buyCoursesForGridCatalogValidator($productId, $productType)
+    {
         $return = [];
         $paypal = $this->get('paypal_enable') === 'true';
         $transfer = $this->get('transfer_enable') === 'true';
@@ -179,7 +193,8 @@ class BuyCoursesPlugin extends Plugin
      * @param int $productType
      * @return string $html
      */
-    public function returnBuyCourseButton($productId, $productType) {
+    public function returnBuyCourseButton($productId, $productType)
+    {
         $url = api_get_path(WEB_PLUGIN_PATH) .
             'buycourses/src/process.php?i=' .
             intval($productId) .
@@ -406,11 +421,8 @@ class BuyCoursesPlugin extends Plugin
     {
         $auth = new Auth();
         $sessions = $auth->browseSessions();
-
         $currency = $this->getSelectedCurrency();
-
         $items = [];
-
         foreach ($sessions as $session) {
             $items[] = $this->getSessionForConfiguration($session, $currency);
         }
@@ -537,7 +549,6 @@ class BuyCoursesPlugin extends Plugin
     private function getUserStatusForCourse($userId, Course $course)
     {
         if (empty($userId)) {
-            
             return 'NO';
         }
 
@@ -598,7 +609,10 @@ class BuyCoursesPlugin extends Plugin
         $courseCatalog = [];
 
         foreach ($courses as $course) {
-            $item = $this->getItemByProduct($course->getId(), self::PRODUCT_TYPE_COURSE);
+            $item = $this->getItemByProduct(
+                $course->getId(),
+                self::PRODUCT_TYPE_COURSE
+            );
 
             if (empty($item)) {
                 continue;
@@ -793,7 +807,6 @@ class BuyCoursesPlugin extends Plugin
         }
 
         $entityManager = Database::getManager();
-
         $item = $this->getItem($itemId);
 
         if (empty($item)) {
@@ -933,7 +946,6 @@ class BuyCoursesPlugin extends Plugin
         switch ($sale['product_type']) {
             case self::PRODUCT_TYPE_COURSE:
                 $course = api_get_course_info_by_id($sale['product_id']);
-
                 $saleIsCompleted = CourseManager::subscribe_user($sale['user_id'], $course['code']);
                 break;
             case self::PRODUCT_TYPE_SESSION:
@@ -1158,7 +1170,6 @@ class BuyCoursesPlugin extends Plugin
         }
 
         $courses = [];
-
         foreach ($courseIds as $courseId) {
             $courses[] = Database::getManager()->find('ChamiloCoreBundle:Course', $courseId);
         }
@@ -1179,8 +1190,7 @@ class BuyCoursesPlugin extends Plugin
         $lowercase = true,
         $uppercase = true,
         $numbers = true
-    )
-    {
+    ) {
         $salt = $lowercase ? 'abchefghknpqrstuvwxyz' : '';
         $salt .= $uppercase ? 'ACDEFHKNPRSTUVWXYZ' : '';
         $salt .= $numbers ? (strlen($salt) ? '2345679' : '0123456789') : '';
@@ -1259,7 +1269,6 @@ class BuyCoursesPlugin extends Plugin
      */
     public function getSaleListByUserId($id)
     {
-
         if (empty($id)) {
             return [];
         }
@@ -1387,7 +1396,7 @@ class BuyCoursesPlugin extends Plugin
     /**
      * Get all beneficiaries for a item
      * @param int $itemId The item ID
-     * @return array The beneficiries. Otherwise return false
+     * @return array The beneficiaries. Otherwise return false
      */
     public function getItemBeneficiaries($itemId)
     {
@@ -1410,7 +1419,6 @@ class BuyCoursesPlugin extends Plugin
     public function deleteItem($itemId)
     {
         $itemTable = Database::get_main_table(BuyCoursesPlugin::TABLE_ITEM);
-
         $affectedRows = Database::delete(
             $itemTable,
             ['id = ?' => intval($itemId)]
@@ -1519,21 +1527,18 @@ class BuyCoursesPlugin extends Plugin
      */
     public function getBeneficiariesBySale($saleId)
     {
-
-        $userTable = Database::get_main_table(TABLE_MAIN_USER);
-
-        $beneficiaries = [];
         $sale = $this->getSale($saleId);
         $item = $this->getItemByProduct($sale['product_id'], $sale['product_type']);
         $itemBeneficiaries = $this->getItemBeneficiaries($item['id']);
-        return $itemBeneficiaries;
 
+        return $itemBeneficiaries;
     }
 
     /**
      * gets all payouts
      * @param int $status - default 0 - pending
      * @param int $payoutId - for get an individual payout if want all then false
+     * @param int $userId
      * @return array
      */
     public function getPayouts($status = self::PAYOUT_STATUS_PENDING, $payoutId = false, $userId = false)
@@ -1605,7 +1610,6 @@ class BuyCoursesPlugin extends Plugin
         }
 
         $paypalFieldId = $paypalExtraField['id'];
-
         $paypalAccount = Database::select(
             "value",
             $extraFieldValues,
@@ -1671,7 +1675,6 @@ class BuyCoursesPlugin extends Plugin
             ['status' => intval($status)],
             ['id = ?' => intval($payoutId)]
         );
-
     }
 
     /**
@@ -1704,8 +1707,9 @@ class BuyCoursesPlugin extends Plugin
     }
 
     /**
-     * Register addicional service
-     * @param array params $service
+     * Register additional service
+     * @param array $service params
+     *
      * @return mixed response
      */
     public function storeService($service)
@@ -1728,7 +1732,9 @@ class BuyCoursesPlugin extends Plugin
             ]
         );
 
-        if ($return && !empty($service['picture_crop_image_base_64']) && !empty($service['picture_crop_result'])) {
+        if ($return && !empty($service['picture_crop_image_base_64'])
+            && !empty($service['picture_crop_result'])
+        ) {
             $img = str_replace('data:image/png;base64,', '', $service['picture_crop_image_base_64']);
             $img = str_replace(' ', '+', $img);
             $data = base64_decode($img);
@@ -1799,7 +1805,7 @@ class BuyCoursesPlugin extends Plugin
     }
 
     /**
-     * List adicional services
+     * List additional services
      * @param integer $id service id
      * @return array
      */
@@ -1888,8 +1894,14 @@ class BuyCoursesPlugin extends Plugin
      * @param boolean $hot enable hot services
      * @return array
      */
-    public function getServiceSale($id = null, $buyerId = null, $status = null, $nodeType = null, $nodeId = null, $hot = false)
-    {
+    public function getServiceSale(
+        $id = null,
+        $buyerId = null,
+        $status = null,
+        $nodeType = null,
+        $nodeId = null,
+        $hot = false
+    ) {
         $servicesTable = Database::get_main_table(BuyCoursesPlugin::TABLE_SERVICES);
         $servicesSaleTable = Database::get_main_table(BuyCoursesPlugin::TABLE_SERVICES_SALE);
 
@@ -1942,7 +1954,6 @@ class BuyCoursesPlugin extends Plugin
         $servicesSale = [];
 
         if ($id) {
-
             $owner = api_get_user_info($return['owner_id']);
             $buyer = api_get_user_info($return['buyer_id']);
 
@@ -1976,9 +1987,7 @@ class BuyCoursesPlugin extends Plugin
             return $servicesSale;
         }
 
-
         foreach ($return as $index => $service) {
-
             $owner = api_get_user_info($service['owner_id']);
             $buyer = api_get_user_info($service['buyer_id']);
 
@@ -2020,6 +2029,7 @@ class BuyCoursesPlugin extends Plugin
     public function cancelServiceSale($serviceSaleId)
     {
         $this->updateServiceSaleStatus($serviceSaleId, self::SERVICE_STATUS_CANCELLED);
+
         return true;
     }
 
@@ -2031,7 +2041,6 @@ class BuyCoursesPlugin extends Plugin
     public function completeServiceSale($serviceSaleId)
     {
         $serviceSale = $this->getServiceSale($serviceSaleId);
-
         if ($serviceSale['status'] == self::SERVICE_STATUS_COMPLETED) {
             return true;
         }
@@ -2102,7 +2111,6 @@ class BuyCoursesPlugin extends Plugin
         }
 
         return $services;
-
     }
 
     /**
@@ -2137,7 +2145,6 @@ class BuyCoursesPlugin extends Plugin
         }
 
         $userId = api_get_user_id();
-
         $service = $this->getServices($serviceId);
 
         if (empty($service)) {
@@ -2254,5 +2261,4 @@ class BuyCoursesPlugin extends Plugin
 
         return $paths[$var];
     }
-
 }
diff --git a/src/Chamilo/CoreBundle/Entity/Session.php b/src/Chamilo/CoreBundle/Entity/Session.php
index e8788794bc..b68bffca63 100644
--- a/src/Chamilo/CoreBundle/Entity/Session.php
+++ b/src/Chamilo/CoreBundle/Entity/Session.php
@@ -1019,7 +1019,7 @@ class Session
         // start buycourse validation
         // display the course price and buy button if the buycourses plugin is enabled and this course is configured
         $plugin = \BuyCoursesPlugin::create();
-        $isThisCourseInSale = $plugin->buyCoursesForGridCatalogVerificator($this->id, \BuyCoursesPlugin::PRODUCT_TYPE_SESSION);
+        $isThisCourseInSale = $plugin->buyCoursesForGridCatalogValidator($this->id, \BuyCoursesPlugin::PRODUCT_TYPE_SESSION);
         $return = [];
 
         if ($isThisCourseInSale) {