diff --git a/public/main/session/session_add.php b/public/main/session/session_add.php
index c449e71cc3..188e86e534 100644
--- a/public/main/session/session_add.php
+++ b/public/main/session/session_add.php
@@ -253,9 +253,9 @@ $form->setDefaults($formDefaults);
 if ($form->validate()) {
     $params = $form->getSubmitValues();
     $name = $params['name'];
-    $startDate = $params['access_start_date2'];
+    $startDate = $params['access_start_date'];
     $endDate = $params['access_end_date'];
-    $displayStartDate = $params['display_start_date2'];
+    $displayStartDate = $params['display_start_date'];
     $displayEndDate = $params['display_end_date'];
     $coachStartDate = $params['coach_access_start_date'];
     if (empty($coachStartDate)) {
diff --git a/src/CoreBundle/Entity/Course.php b/src/CoreBundle/Entity/Course.php
index 473d62bd33..a2c12fe7c1 100644
--- a/src/CoreBundle/Entity/Course.php
+++ b/src/CoreBundle/Entity/Course.php
@@ -550,10 +550,15 @@ class Course extends AbstractResource implements ResourceInterface, ResourceWith
 
     public function getTeachersSubscriptions(): Collection
     {
-        $criteria = Criteria::create();
-        $criteria->where(Criteria::expr()->eq('status', CourseRelUser::TEACHER));
+        $teacherSubscriptions = new ArrayCollection();
 
-        return $this->users->matching($criteria);
+        foreach ($this->users as $subscription) {
+            if ($subscription->getStatus() === CourseRelUser::TEACHER) {
+                $teacherSubscriptions->add($subscription);
+            }
+        }
+
+        return $teacherSubscriptions;
     }
 
     public function addUserAsTeacher(User $user): self
diff --git a/tests/scripts/disable_user_conditions.php b/tests/scripts/disable_user_conditions.php
new file mode 100644
index 0000000000..dfdbb627e2
--- /dev/null
+++ b/tests/scripts/disable_user_conditions.php
@@ -0,0 +1,262 @@
+<?php
+
+/* For licensing terms, see /license.txt 
+ * This script disable users depending on 3 use cases and send an email to the user to inform him
+ * The 3 cases for disabling a user are :
+ *  * Case 1
+ *   If a learner has not validated his terms and conditions and has not connected to the
+ *   platform for more than 3 months then deactivate his account and send an email to the user
+ *  * Case 2
+ *   If a learner has validated his terms and conditions and has not connected to the plateform
+ *   for more than 6 months then deactivate his account and send an email to the learner and to 
+ *   it's superior. The superior of the learner is also removed from this learner (deassignment).
+ *  * Case 3
+ *   If a learner has completed its courses (a learner is considered to have finished their courses
+ *   if he has a generated the general certificate) and has not connected to the platfrom for more 
+ *   than 6 months then deactivate his account and send an email to the learner.
+ * */
+
+require_once __DIR__.'/../../public/main/inc/global.inc.php';
+
+$senderId = api_get_setting('disable_user_conditions_sender_id');
+
+if (empty($senderId)) {
+    exit;
+}
+
+$test = true;
+$newLine = '<br />';
+if (PHP_SAPI == 'cli') {
+    $newLine = PHP_EOL;
+}
+$userReportList = [];
+$extraFieldValue = new ExtraField('user');
+$extraFieldInfo = $extraFieldValue->get_handler_field_info_by_field_variable('termactivated');
+$fieldId = $extraFieldInfo['id'];
+$senderInfo = api_get_user_info($senderId);
+if (empty($senderInfo)) {
+    echo 'Please set the configuration value: "disable_user_conditions_sender_id" for a valid user.';
+}
+
+$statusCondition = ' AND u.status = '.STUDENT;
+
+$date = new Datetime();
+$now = $date->format('Y-m-d H:i:s');
+
+$date = $date->sub(new DateInterval('P3M'));
+$date3Months = $date->format('Y-m-d H:i:s');
+
+$date = new Datetime();
+$date = $date->sub(new DateInterval('P6M'));
+$date6Months = $date->format('Y-m-d H:i:s');
+
+// 1. Not contract not connected in 3 months
+$sql = "SELECT u.id
+        FROM user u
+        LEFT JOIN extra_field_values ev
+        ON u.id = ev.item_id AND field_id = $fieldId
+        WHERE
+            (ev.value IS NULL OR ev.value = '') AND
+            u.active = 1
+            $statusCondition
+        ";
+
+$result = Database::query($sql);
+$students = Database::store_result($result);
+foreach ($students as $student) {
+    $studentId = $student['id'];
+    $lastDate = Tracking::get_last_connection_date($studentId, false, true);
+    $lastDate = api_get_utc_datetime($lastDate);
+
+    if ($date3Months > $lastDate) {
+        $disabledUser = api_get_user_info($studentId);
+        if (empty($disabledUser)) {
+            continue;
+        }
+        if (!isset($userReportList[$studentId]['message'])) {
+            $userReportList[$studentId]['message'] = '';
+        }
+        $userReportList[$studentId]['message'] .= $newLine."User# $studentId (".$disabledUser['username'].") to be disabled. Case 1. Last connection: $lastDate - 3 months: $date3Months ";
+
+        $language = $disabledUser['language'];
+        $subject = get_lang('AccountDisabled', null, $language).': '.$disabledUser['complete_name'];
+        $content = get_lang('DisableUserCase1', null, $language);
+
+        $userReportList[$studentId]['message'] .= $newLine.
+            'Mail will be send to: '.$disabledUser['username'].' ('.$disabledUser['email'].')'.$newLine.
+            'Subject: '.$subject.$newLine.
+            'Content: '.$content.$newLine;
+
+        if (false === $test) {
+            MessageManager::send_message(
+                $studentId,
+                $subject,
+                $content,
+                [],
+                [],
+                0,
+                0,
+                0,
+                0,
+                $senderId
+            );
+            UserManager::disable($studentId);
+        }
+    }
+}
+
+// 3. Certificate completed not connected 6 months.
+$sql = "SELECT c.user_id, MAX(login_date) latest_login_date
+        FROM gradebook_certificate c
+        INNER JOIN track_e_login l
+        ON (l.login_user_id = c.user_id)
+        INNER JOIN user u
+        ON (l.login_user_id = u.id)
+        WHERE 1=1
+        $statusCondition
+        GROUP BY c.user_id  ";
+
+$result = Database::query($sql);
+$students = Database::store_result($result);
+foreach ($students as $student) {
+    $studentId = $student['user_id'];
+    $lastDate = $student['latest_login_date'];
+
+    if ($date6Months > $lastDate) {
+        $disabledUser = api_get_user_info($studentId);
+        if (empty($disabledUser)) {
+            continue;
+        }
+
+        if (1 != $disabledUser['active']) {
+            continue;
+        }
+
+        $language = $disabledUser['language'];
+        $subject = get_lang('AccountDisabled', null, $language).': '.$disabledUser['complete_name'];
+        $content = get_lang('DisableUserCase3Student', null, $language);
+
+        if (!isset($userReportList[$studentId]['message'])) {
+            $userReportList[$studentId]['message'] = '';
+        }
+
+        $userReportList[$studentId]['message'] .= $newLine."User# $studentId (".$disabledUser['username'].") to be disabled. Case 3. Last connection: $lastDate - 6 months: $date6Months ";
+        $userReportList[$studentId]['message'] .= $newLine.
+            'Mail will be send to: '.$disabledUser['username'].$newLine.
+            'Subject: '.$subject.$newLine.
+            'Content: '.$content;
+
+        if (false === $test) {
+            MessageManager::send_message(
+                $studentId,
+                $subject,
+                $content,
+                [],
+                [],
+                0,
+                0,
+                0,
+                0,
+                $senderId
+            );
+            UserManager::disable($studentId);
+        }
+    }
+}
+
+// 2. Validated contract, not connected + 6 months
+$sql = "SELECT u.id
+        FROM user u
+        INNER JOIN extra_field_values ev
+        ON u.id = ev.item_id AND field_id = $fieldId
+        WHERE
+            ev.value = 1 AND
+            u.active = 1
+            $statusCondition
+        ";
+
+$result = Database::query($sql);
+$students = Database::store_result($result);
+foreach ($students as $student) {
+    $studentId = $student['id'];
+    $lastDate = Tracking::get_last_connection_date($studentId, false, true);
+    $lastDate = api_get_utc_datetime($lastDate);
+
+    if ($date6Months > $lastDate) {
+        $disabledUser = api_get_user_info($studentId);
+        if (empty($disabledUser)) {
+            continue;
+        }
+
+        if (!isset($userReportList[$studentId]['message'])) {
+            $userReportList[$studentId]['message'] = '';
+        }
+
+        $userReportList[$studentId]['message'] .= $newLine."User# $studentId (".$disabledUser['username'].") to be disabled. Case 2 . Last connection: $lastDate - 6 months: $date6Months ";
+
+        $subject = get_lang('AccountDisabled', null, $disabledUser['language']).': '.$disabledUser['complete_name'];
+        $content = get_lang('DisableUserCase2', null, $disabledUser['language']);
+
+        $userReportList[$studentId]['message'] .= $newLine.'Mail will be send to: '.$disabledUser['username'].$newLine.'Subject: '.$subject.$newLine.'Content: '.$content.$newLine;
+
+        $subjectBoss = '';
+        $contentBoss = '';
+        $studentBoss = UserManager::getFirstStudentBoss($studentId);
+        $bossInfo = [];
+        if (!empty($studentBoss)) {
+            $bossInfo = api_get_user_info($studentBoss);
+            if ($bossInfo) {
+                $subjectBoss = get_lang('AccountDisabled', null, $bossInfo['language']).': '.$disabledUser['complete_name'];
+                $contentBoss = sprintf(get_lang('DisableUserCase2StudentX', null, $bossInfo['language']), $disabledUser['complete_name']);
+                $userReportList[$studentId]['message'] .= $newLine.'Mail will be send to: '.$bossInfo['username'].$newLine.'Subject: '.$subjectBoss.$newLine.'Content: '.$contentBoss.$newLine;
+            }
+        }
+
+        if (false === $test) {
+            MessageManager::send_message(
+                $studentId,
+                $subject,
+                $content,
+                [],
+                [],
+                0,
+                0,
+                0,
+                0,
+                $senderId
+            );
+            UserManager::disable($studentId);
+            if (!empty($bossInfo) && !empty($subjectBoss)) {
+                MessageManager::send_message(
+                    $studentBoss,
+                    $subjectBoss,
+                    $contentBoss,
+                    [],
+                    [],
+                    0,
+                    0,
+                    0,
+                    0,
+                    $senderId
+                );
+            }
+            UserManager::removeAllBossFromStudent($studentId);
+        }
+    }
+}
+
+if ($test) {
+    echo '<h3>No changes have been made.</h3>'.$newLine;
+}
+
+echo 'Sender user: '.$senderInfo['complete_name'].' ('.$senderInfo['email'].') '.$newLine;
+echo "Now: $now".$newLine;
+echo "3 Months old: $date3Months".$newLine;
+echo "6 Months old: $date6Months".$newLine;
+echo $newLine;
+
+ksort($userReportList);
+
+foreach ($userReportList as $data) {
+    echo $data['message'].$newLine;
+}