diff --git a/BackEnd/src/main/java/studycave/studycaverestservice/usos/AuthorizationService.java b/BackEnd/src/main/java/studycave/studycaverestservice/usos/AuthorizationService.java
index 95ba12c..d9b18d0 100644
--- a/BackEnd/src/main/java/studycave/studycaverestservice/usos/AuthorizationService.java
+++ b/BackEnd/src/main/java/studycave/studycaverestservice/usos/AuthorizationService.java
@@ -74,7 +74,7 @@ public class AuthorizationService {
             oauth_token_secret = tokens[1].replace("oauth_token_secret=", "");
             TokenResponseDTO tokenResponseDTO = createUserAccountAndReturnHeaderToken(oauth_token, oauth_token_secret);
             updateUserGroupsAndStudents(oauth_token, oauth_token_secret);
-            logOut(oauth_token, oauth_token_secret);
+            //logOut(oauth_token, oauth_token_secret);
             return tokenResponseDTO;
         }
         return new TokenResponseDTO("authorization failed", null);
@@ -82,6 +82,7 @@ public class AuthorizationService {
 
     private void updateUserGroupsAndStudents(String oauth_token, String oauth_token_secret) throws UnsupportedEncodingException, InvalidKeyException, NoSuchAlgorithmException {
         List<NameValuePair> queryParams = new ArrayList<>();
+        queryParams.add(new BasicNameValuePair("fields", "course_unit_id|group_number|class_type|class_type_id|course_id|course_name|course_lang_id"));
         queryParams.add(new BasicNameValuePair("oauth_consumer_key", propertiesLoader.getKey()));
         queryParams.add(new BasicNameValuePair("oauth_nonce", "" + (int) (Math.random() * 100000000)));
         queryParams.add(new BasicNameValuePair("oauth_signature_method", "HMAC-SHA1"));