diff --git a/classes/plagiarism_pchkorg_api_provider.php b/classes/plagiarism_pchkorg_api_provider.php
index 75e7337..c4522b5 100644
--- a/classes/plagiarism_pchkorg_api_provider.php
+++ b/classes/plagiarism_pchkorg_api_provider.php
@@ -372,6 +372,11 @@ class plagiarism_pchkorg_api_provider {
      * @return object|null
      */
     public function check_text($textid) {
+        if ($this->is_group_token()) {
+            // The same method but for group users.
+            // It uses different auth.
+            return $this->group_check_text($textid);
+        }
         $curl = new curl();
         $response = $curl->get($this->endpoint . '/api/v1/text/' . $textid, array(), array(
                 'CURLOPT_RETURNTRANSFER' => true,
@@ -393,6 +398,36 @@ class plagiarism_pchkorg_api_provider {
         return null;
     }
 
+    /**
+     * Check status of document for Group User
+     * If document has been checked, state is 5.
+     *
+     * @param $textid
+     * @return object|null
+     */
+    public function group_check_text($textid) {
+        $curl = new curl();
+        $response = $curl->get("{$this->endpoint}/lms/check-report/{$textid}/", array(
+                'token' => $this->token
+        ), array(
+                'CURLOPT_RETURNTRANSFER' => true,
+                'CURLOPT_FOLLOWLOCATION' => true,
+                'CURLOPT_SSL_VERIFYHOST' => false,
+                'CURLOPT_SSL_VERIFYPEER' => false,
+                'CURLOPT_POST' => false,
+                'CURLOPT_HTTPHEADER' => array(
+                        'Content-Type: application/x-www-form-urlencoded'
+                ),
+        ));
+        if ($json = json_decode($response)) {
+            if (isset($json->data) && 5 == $json->data->state) {
+                return $json->data->report;
+            }
+        }
+
+        return null;
+    }
+
     /**
      * Build url for the api.
      *
diff --git a/db/tasks.php b/db/tasks.php
index 66c1c33..a0457d7 100644
--- a/db/tasks.php
+++ b/db/tasks.php
@@ -27,7 +27,7 @@ $tasks = array(
     array(
         'classname' => 'plagiarism_pchkorg\task\update_reports',
         'blocking' => 0,
-        'minute' => '*/5',
+        'minute' => '*/2',
         'hour' => '*',
         'day' => '*',
         'dayofweek' => '*',
@@ -36,7 +36,7 @@ $tasks = array(
     array(
         'classname' => 'plagiarism_pchkorg\task\send_submissions',
         'blocking' => 0,
-        'minute' => '*/5',
+        'minute' => '*/2',
         'hour' => '*',
         'day' => '*',
         'dayofweek' => '*',
diff --git a/version.php b/version.php
index 71b603b..5834ca4 100644
--- a/version.php
+++ b/version.php
@@ -26,9 +26,9 @@ defined('MOODLE_INTERNAL') || die();
 if (!isset($plugin)) {
     $plugin = new stdClass();
 }
-$plugin->version = 2019041701;
+$plugin->version = 2019042501;
 $plugin->requires = 2017051501; // Requires Moodle 3.3 .
-$plugin->release = 'v3.3';
+$plugin->release = 'v3.4';
 $plugin->maturity = MATURITY_STABLE;
 $plugin->component = 'plagiarism_pchkorg';
 $plugin->dependencies = array(