diff --git a/README.md b/README.md
index aa3eb4a..7d6951d 100644
--- a/README.md
+++ b/README.md
@@ -176,6 +176,7 @@ It is possible to chain requests: [see doc](https://support.insomnia.rest/articl
 ### Bugs
 - It is possible to add token with token ID (tokenData) which already exists
 - No error message, when request data are invalid in login
+- getUpdated returns valid data for invalid time (negative)
 ### Improvements
 - it would be nice to get response messages on calling enpoints
   - setToken -> successful edit/insert
diff --git a/src/colnod/colnodapi.cpp b/src/colnod/colnodapi.cpp
index 906fb0b..1433581 100644
--- a/src/colnod/colnodapi.cpp
+++ b/src/colnod/colnodapi.cpp
@@ -3,12 +3,9 @@
 Q_LOGGING_CATEGORY(colnod, "colnod.api");
 
 
-ColnodAPI::ColnodAPI(serversdk::RequestManager* reqMan, const qint64 &lastSync, const bool &dryMode, const QString &userName, const QString &password)
+ColnodAPI::ColnodAPI(serversdk::RequestManager* reqMan, const bool &dryMode, const QString &userName, const QString &password)
     :mReqMan(reqMan), mUserName(userName), mPassword(password), mDryMode(dryMode)
 {
-    mLastSync.set_timestamp(lastSync);
-    mData = std::make_shared<Data>();
-
     // -----------------------------------
     mReqMan->setIgnoreSsl(true);
     // -----------------------------------
@@ -28,7 +25,8 @@ void ColnodAPI::downloadData(const Timestamp &time)
     connect(login.get(), &serversdk::Request::finished, this, [=](){
         // Get login token
         if (!checkRequest(login)) {
-            emit error();
+            emit downloadDataFinished(nullptr);
+            return;
         }
 
         AuthToken token;
@@ -41,6 +39,7 @@ void ColnodAPI::downloadData(const Timestamp &time)
             if (!checkRequest(request)) {
                 qWarning(colnod) << "ERROR during calling" << request->url() << ", request unsuccessful";
                 mValid = false;
+                emit downloadDataFinished(nullptr);
             }
             else if (!checkResponse(request->responseData())) {
                 qWarning(colnod) << "Data from" << request->url() << "are invalid";
@@ -269,6 +268,7 @@ void ColnodAPI::areDataReady(std::shared_ptr<Data> data)
         qInfo(colnod) << tab << tab << data->deletedSubjects.size() << "SUBJECTS DELETED";
         qInfo(colnod) << dash;
 
+        amountData = 0;
         emit downloadDataFinished(data);
     }
 }
diff --git a/src/colnod/colnodapi.h b/src/colnod/colnodapi.h
index a8e799c..68ed360 100644
--- a/src/colnod/colnodapi.h
+++ b/src/colnod/colnodapi.h
@@ -48,7 +48,7 @@ class ColnodAPI: public QObject
     Q_OBJECT
 public:
     ColnodAPI() = default;
-    ColnodAPI(serversdk::RequestManager* reqMan, const qint64 &lastSync = 0, const bool &dryMode = false, const QString &userName = "spaceti", const QString &password = "spaceti1");
+    ColnodAPI(serversdk::RequestManager* reqManconst, const bool &dryMode = false, const QString &userName = "spaceti", const QString &password = "spaceti1");
 
     void downloadData(const Timestamp &time);
     void processData(const std::shared_ptr<Data> &data);
diff --git a/src/colnod/syncmanager.cpp b/src/colnod/syncmanager.cpp
index 9e630c2..cb537e1 100644
--- a/src/colnod/syncmanager.cpp
+++ b/src/colnod/syncmanager.cpp
@@ -32,7 +32,7 @@ bool SyncManager::databaseInitialization()
 
     // here -> nothing can fail
     mlastSync.set_timestamp(database->getLastSync());
-    colnod = std::make_shared<ColnodAPI>(&reqMan, mlastSync.timestamp(), mDryMode);
+    colnod = std::make_shared<ColnodAPI>(&reqMan, mDryMode);
     return true;
 }
 
diff --git a/test/auto/colnod/tst_colnodapi.cpp b/test/auto/colnod/tst_colnodapi.cpp
index 2e6c57f..dedd554 100644
--- a/test/auto/colnod/tst_colnodapi.cpp
+++ b/test/auto/colnod/tst_colnodapi.cpp
@@ -1,15 +1,27 @@
 #include <QtTest>
 
 #include "colnodapi.h"
+#include "serversdk/request.h"
 // add necessary includes here
 
+Q_DECLARE_METATYPE(std::shared_ptr<Data>)
+Q_DECLARE_METATYPE(std::shared_ptr<serversdk::Request>);
+
 class ColnodTest : public QObject
 {
     Q_OBJECT
+public:
+    ColnodTest()
+    {
+        qRegisterMetaType<std::shared_ptr<Data>>();
+        qRegisterMetaType<std::shared_ptr<serversdk::Request>>();
+    }
+
 private slots:
     void login();
     void getTokens();
     void download_data_test();
+    void download_data_fail_test();
 
 private:
     QString getLoginToken(ColnodAPI &colnod);
@@ -48,13 +60,45 @@ void ColnodTest::download_data_test()
 {
     serversdk::RequestManager reqMan;
     ColnodAPI colnod(&reqMan);
+    {
+        QSignalSpy spy(&colnod, &ColnodAPI::downloadDataFinished);
+        colnod.downloadData(Timestamp(1570190399259));
+        QVERIFY(spy.wait());
 
-    Timestamp time(QDateTime::currentMSecsSinceEpoch());
-    colnod.downloadData(time);
+        auto data = qvariant_cast<std::shared_ptr<Data>>(spy.at(0).at(0));
+        QVERIFY(data);
+
+        QVERIFY(data->updatedTokens.size() > 0);
+        QVERIFY(data->updatedTokens.contains("5e2f1260-da1c-441f-9644-24dfe3b97b2a"));
+    }
+    {
+        Timestamp time(QDateTime::currentMSecsSinceEpoch());
+        colnod.downloadData(time);
+        QSignalSpy spy(&colnod, &ColnodAPI::downloadDataFinished);
+        QVERIFY(spy.wait());
+        auto data = qvariant_cast<std::shared_ptr<Data>>(spy.at(0).at(0));
+        QVERIFY(data);
+
+        QVERIFY(data->updatedTokens.size() == 0);
+    }
+}
+
+void ColnodTest::download_data_fail_test()
+{
+    serversdk::RequestManager reqMan;
+    ColnodAPI colnod(&reqMan, false, "spaceti", "wrong password");
+
+    Timestamp time(0);
     QSignalSpy spy(&colnod, &ColnodAPI::downloadDataFinished);
+    colnod.downloadData(time);
+
     QVERIFY(spy.wait());
-    auto arguments = spy.takeFirst();
-    QVERIFY(arguments.first().data());
+
+    auto data = qvariant_cast<std::shared_ptr<Data>>(spy.at(0).at(0));
+
+    QVERIFY(!data);
+
+
 }
 
 QString ColnodTest::getLoginToken(ColnodAPI &colnod)