diff --git a/app.py b/app.py
index f28c9bb..2b3e758 100644
--- a/app.py
+++ b/app.py
@@ -37,6 +37,8 @@ def check_login_status():
 
 
 def manageProcess(fCommand, fData):
+    if (check_login_status()):
+        return redirect('/logout')
     # this is to fix a bug where pyrebase doesnt load the first request
     db.child("Users").child(
         session['uid']).child("permission").get().val()
@@ -86,6 +88,7 @@ def manageProcess(fCommand, fData):
         print("got class")
         homerooms = cateData['Homerooms']
         currDate = ""
+        confirmed = []
         absData = {}
         for h in homerooms:
             h = h.split('^')
@@ -104,6 +107,7 @@ def manageProcess(fCommand, fData):
                             dow = tmpAbsData[currDate][j]
                             continue
                         elif j == "confirm":
+                            confirmed.append([h[0], h[1]])
                             continue
                         if (tmpAbsData[currDate][j]['name'] == 'GP' and
                                 tmpAbsData[currDate][j]['teacher'] == cclass['category']):
@@ -119,6 +123,7 @@ def manageProcess(fCommand, fData):
                                     dow = tmpAbsData[i][j]
                                     continue
                                 elif j == "confirm":
+                                    confirmed.append([h[0], h[1]])
                                     continue
                                 if (tmpAbsData[i][j]['name'] == 'GP' and
                                         tmpAbsData[i][j]['teacher'] == cclass['category']):
@@ -132,6 +137,7 @@ def manageProcess(fCommand, fData):
                         dow = tmpAbsData[currDate][j]
                         continue
                     elif j == "confirm":
+                        confirmed.append([h[0], h[1]])
                         continue
                     if (tmpAbsData[currDate][j]['name'] == 'GP' and
                             tmpAbsData[currDate][j]['teacher'] == cclass['category']):
@@ -155,7 +161,7 @@ def manageProcess(fCommand, fData):
                             "absent": num in tmpAbsData[currDate][p]
                         }
             print(absData)
-        return render_template('group_teach.html', cclass=cclass, absData=absData, dow=dow, currDate=currDate, tmpAbsData=tmpAbsData)
+        return render_template('group_teach.html', cclass=cclass, absData=absData, dow=dow, currDate=currDate, tmpAbsData=tmpAbsData, confirmed=confirmed)
     elif pl == 'homeroom':
         homeroom = db.child("Users").child(
             session['uid']).child("homeroom").get().val().split('^')
@@ -222,6 +228,8 @@ def manage_admin():
 
 @ app.route('/manage/group_teach_publish', methods=['POST'])
 def group_teach_publish():
+    if (check_login_status()):
+        return redirect('/logout')
     classes = db.child("Users").child(
         session['uid']).child("class").get().val()
     cclass = {}
@@ -265,6 +273,9 @@ def group_teach_publish():
 
 @ app.route('/manage/homeroom_abs', methods=['POST'])
 def homeroom_abs_publish():
+    if (check_login_status()):
+        return redirect('/logout')
+
     date = request.form['date']
     homeroom = request.form['homeroom'].split('^')
     period = request.form['period']
@@ -293,6 +304,8 @@ def homeroom_abs_publish():
 
 @app.route('/manage/homeroom_confirm', methods=['POST'])
 def homeroom_confirm():
+    if (check_login_status()):
+        return redirect('/logout')
     date = request.form['date']
     homeroom = request.form['homeroom'].split('^')
     signature = request.form['signatureData']
@@ -306,6 +319,7 @@ def homeroom_confirm():
                   ).put(os.path.join('temp', rand))
     db.child("Homerooms").child(homeroom[0]).child(homeroom[1]).child("Absent").child(date).update(
         {"confirm": str(storage.child(os.path.join('signatures', rand)).get_url(None))})
+    os.remove(os.path.join('temp', rand))
     return redirect('/manage')
 
 
diff --git a/templates/admin.html b/templates/admin.html
index 32f08c3..7d23c89 100644
--- a/templates/admin.html
+++ b/templates/admin.html
@@ -186,6 +186,13 @@
     <div id="loading" style="text-align:center; width:100%; display:none;"><img src="/static/loading.gif" alt=""
             style="height:100%;" />
     </div>
+    <footer>
+        <hr>
+        <p style="text-align: center;">&copy; 2021 Attendance (β) | Made by <a target="_blank"
+                href="https://github.com/aaronleetw">Aaron Lee</a> for <a target="_blank"
+                href="https://www.fhjh.tp.edu.tw">Taipei Fuhsing Private School</a>
+        </p>
+    </footer>
     <script>
         var homerooms = {};
         {% for i in homerooms %}
diff --git a/templates/group_teach.html b/templates/group_teach.html
index 455a835..e2d8c20 100644
--- a/templates/group_teach.html
+++ b/templates/group_teach.html
@@ -67,7 +67,7 @@
                     {% endif %}
                     {% else %}
                     <div class="col">
-                        {% if 'confirm' in absData[i][grade][homeroom] %}
+                        {% if [grade,homeroom] in confirmed %}
                         <p class="highlightAbs">--</p>
                         {% else %}
                         <input type="checkbox" class="{{grade}}^{{homeroom}}^{{student}}">
@@ -135,6 +135,13 @@
     <div id="loading" style="text-align:center; width:100%; display:none;"><img src="/static/loading.gif" alt=""
             style="height:100%;" />
     </div>
+    <footer>
+        <hr>
+        <p style="text-align: center;">&copy; 2021 Attendance (β) | Made by <a target="_blank"
+                href="https://github.com/aaronleetw">Aaron Lee</a> for <a target="_blank"
+                href="https://www.fhjh.tp.edu.tw">Taipei Fuhsing Private School</a>
+        </p>
+    </footer>
     <script>
         function loadingAnimation() {
             $("div.container").hide();
diff --git a/templates/homeroom.html b/templates/homeroom.html
index 368cafb..24af4fe 100644
--- a/templates/homeroom.html
+++ b/templates/homeroom.html
@@ -194,7 +194,13 @@
     <div id="loading" style="text-align:center; width:100%; display:none;"><img src="/static/loading.gif" alt=""
             style="height:100%;" />
     </div>
-
+    <footer>
+        <hr>
+        <p style="text-align: center;">&copy; 2021 Attendance (β) | Made by <a target="_blank"
+                href="https://github.com/aaronleetw">Aaron Lee</a> for <a target="_blank"
+                href="https://www.fhjh.tp.edu.tw">Taipei Fuhsing Private School</a>
+        </p>
+    </footer>
     <script>
         var signaturePad, hrCfrm = false;
         function loadingAnimation() {
@@ -253,6 +259,8 @@
         }
         function homeroomCfrm() {
             hrCfrm = true;
+            $('.tobeform').attr('disabled', 'disabled');
+            $('.afterSelButton').attr('disabled', 'disabled');
             showSignaturePad();
         }
     </script>
diff --git a/templates/login.html b/templates/login.html
index 1f8eef2..3e96118 100644
--- a/templates/login.html
+++ b/templates/login.html
@@ -40,8 +40,14 @@
     <div id="loading" style="text-align:center; width:100%; display:none;"><img src="/static/loading.gif" alt=""
             style="height:100%;" />
     </div>
-    <!-- end login form center -->
-    <script type="text/javascript" src="/static/jquery.min.js"></script>
+    <footer>
+        <hr>
+        <p style="text-align: center;">&copy; 2021 Attendance (β) | Made by <a target="_blank"
+                href="https://github.com/aaronleetw">Aaron Lee</a> for <a target="_blank"
+                href="https://www.fhjh.tp.edu.tw">Taipei Fuhsing Private School</a>
+        </p>
+    </footer>
+    <script type=" text/javascript" src="/static/jquery.min.js"></script>
     <script>
         function loadingAnimation() {
             $('.container').hide();
diff --git a/templates/uploadcsv.html b/templates/uploadcsv.html
index dd4f83e..83090d5 100644
--- a/templates/uploadcsv.html
+++ b/templates/uploadcsv.html
@@ -49,6 +49,13 @@
     <div id="loading" style="text-align:center; width:100%; display:none;"><img src="/static/loading.gif" alt=""
             style="height:100%;" />
     </div>
+    <footer>
+        <hr>
+        <p style="text-align: center;">&copy; 2021 Attendance (β) | Made by <a target="_blank"
+                href="https://github.com/aaronleetw">Aaron Lee</a> for <a target="_blank"
+                href="https://www.fhjh.tp.edu.tw">Taipei Fuhsing Private School</a>
+        </p>
+    </footer>
     <script type="text/javascript" src="/static/jquery.min.js"></script>
     <script>
         function loadingAnimation() {