diff --git a/Interface.tsx b/Interface.tsx
index e4dfb22..e4a09c0 100644
--- a/Interface.tsx
+++ b/Interface.tsx
@@ -76,13 +76,20 @@ const Interface = ({ children }) => {
     };
 
     const fetchUserInformation = async (username) => {
-        const userinformation = await requestGet(`userinformation/?username=${username}`, false);
-        if (!userinformation) {
-            console.log("Using Demoinformation");
-            showToast(ToastType.Info, "You are using a DEMOUSER", 5000);
-            return await requestGet(`demoinformation/`);
+        try {
+            return await requestGet(`userinformation/?username=${username}`, false); 
+        } catch (error) {
+            if (error.response.status === 404) {
+                const demoinformation = await requestGet(`demoinformation/`);
+                if (demoinformation) {   
+                  console.log("Using Demoinformation");
+                  showToast(ToastType.Info, "You are using a DEMOUSER", 5000);
+                }
+                return demoinformation;
+            }
+            console.error("Error fetching user information:", error);
+            return Null;
         }
-        return userinformation;
     };
 
     const fetchTimes = async () => {
@@ -127,7 +134,7 @@ const Interface = ({ children }) => {
             }
         } catch (error) {
             if (!handleError) {
-                return null
+                throw(error);
             } else if (error.response) {
                 if (error.response.data.message) {
                     throw new NetworkError(error.response.status + ": " + error.response.data.message, url);
diff --git a/screens/Calendar.tsx b/screens/Calendar.tsx
index bdf0d2a..d21d710 100644
--- a/screens/Calendar.tsx
+++ b/screens/Calendar.tsx
@@ -1,6 +1,6 @@
 import { addMonths, addDays, format, isSameDay, isWithinInterval, parseISO, getDay, parse, differenceInDays } from 'date-fns';
 import React, { useContext, useEffect, useState, useMemo, useCallback } from 'react';
-import { FlatList, ScrollView, StyleSheet, View, Text, TouchableOpacity, Modal } from 'react-native';
+import { FlatList, ScrollView, StyleSheet, View, Text, TouchableOpacity, Modal, Linking } from 'react-native';
 import ErrorBoundary from 'react-native-error-boundary';
 import { RefreshControl } from 'react-native-web-refresh-control';
 import { InterfaceContext } from '../Interface';
@@ -107,34 +107,39 @@ const Calendar = () => {
         );
       } else if (selectedView === 'tests') {
         return (
-          <FlatList
-            refreshControl={<RefreshControl refreshing={loading} onRefresh={refresh} colors={[colors.primary]} />}
-            data={calendarData.tests}
-            keyExtractor={(item) => item.date + item.hourFrom + item.hourUntil + item.subject}
+          <View style={{ marginLeft: 5 }}>
+            <TouchableOpacity onPress={() => Linking.openURL('https://ux4.edvschule-plattling.de/~hthaler/tests-calendar/')}>
+              <Text style={{ color: colors.primary }}>Prüfungen in einen Kalender importieren (.ics)</Text>
+            </TouchableOpacity>
+            <FlatList
+              refreshControl={<RefreshControl refreshing={loading} onRefresh={refresh} colors={[colors.primary]} />}
+              data={calendarData.tests}
+              keyExtractor={(item) => item.date + item.hourFrom + item.hourUntil + item.subject}
               renderItem={({ item }) => (
-              <View style={{ marginLeft: 5, marginBottom: 5, borderBottomWidth: 1, borderColor: '#ccc' }}>
-                <View style={{ flexDirection: 'row', alignItems: 'center', marginBottom: 3 }}>
-                  <ThemeText style={{ fontWeight: 'bold', marginRight: 5 }}>{format(item.date, 'dd.MM.yyyy')}</ThemeText>
-                  <ThemeText>{`${item.timeFrom}-${item.timeUntil}`}</ThemeText>
-                </View>
-                <View style={{ flexDirection: 'row', alignItems: 'center', marginBottom: 5 }}>
-                  <ThemeText style={{ marginRight: 5 }}>{item.subject}</ThemeText>
-                  <ThemeText style={{ marginRight: 5 }}>{item.type}</ThemeText>
-                  {userInformation.usertype === 'teacher' && (
-                    <ThemeText style={{ marginRight: 5 }}>{item.class}</ThemeText>
-                  )}
-                  {userInformation.usertype === 'pupil' && (
-                    <ThemeText style={{ marginRight: 5 }}>{item.teacher}</ThemeText>
-                  )}
-                  <ThemeText style={{ marginRight: 5 }}>{item.room}</ThemeText>
-                  <ThemeText style={{ marginRight: 5 }}>{`${item.hourFrom||'n'}-${item.hourUntil||'n'}`}</ThemeText>
-                </View>
-              </View>
-            )}
-        getItemLayout={(data, index) => (
-              { length: 70, offset: 70 * index, index }
-            )}
-          />
+                <View style={{ marginTop: 5, borderBottomWidth: 1, borderColor: '#ccc', flexDirection: 'row', flexWrap: 'wrap' }}>
+                  <View style={{ flexDirection: 'row', alignItems: 'center', marginBottom: 5, marginRight: 20 }}>
+                    <ThemeText style={{ fontWeight: 'bold', marginRight: 5 }}>{format(item.date, 'dd.MM.yyyy')}</ThemeText>
+                    <ThemeText>{`${item.timeFrom}-${item.timeUntil}`}</ThemeText>
+                  </View>
+                  <View style={{ flexDirection: 'row', alignItems: 'center', marginBottom: 5 }}>
+                    <ThemeText style={{ marginRight: 5 }}>{item.subject}</ThemeText>
+                    <ThemeText style={{ marginRight: 5 }}>{item.type}</ThemeText>
+                    {userInformation.usertype === 'teacher' && (
+                      <ThemeText style={{ marginRight: 5 }}>{item.class}</ThemeText>
+                    )}
+                    {userInformation.usertype === 'pupil' && (
+                      <ThemeText style={{ marginRight: 5 }}>{item.teacher}</ThemeText>
+                    )}
+                    <ThemeText style={{ marginRight: 5 }}>{item.room}</ThemeText>
+                    <ThemeText style={{ marginRight: 5 }}>{`${item.hourFrom||'n'}-${item.hourUntil||'n'}`}</ThemeText>
+                  </View>
+                </View> 
+              )}
+              getItemLayout={(data, index) => (
+                { length: 70, offset: 70 * index, index }
+              )}
+            />
+          </View>
         );
       } else if (selectedView === 'appointments') {
         // Group appointments by day
@@ -401,7 +406,6 @@ const getDayType = (date, calendarData) => {
     return fromDate <= targetDate && targetDate <= untilDate;
   });
 
-  console.log(targetDate, dayType);
   return dayType ? dayType.type : "schultag";
 };