diff --git a/app.py b/app.py
index 724f993..8349ebd 100644
--- a/app.py
+++ b/app.py
@@ -145,4 +145,4 @@ admin.add_link(MenuLink(name='Back to Home 返回一般管理', category='', url
 admin.add_link(MenuLink(name='Logout 登出', category='', url='/logout'))
 
 if __name__ == '__main__':
-    app.run(debug=True, host='0.0.0.0', port=80)
+    app.run(debug=True, host='0.0.0.0', port=5000)
diff --git a/db.sql b/db.sql
index fae6e55..1ca23a6 100644
--- a/db.sql
+++ b/db.sql
@@ -76,7 +76,6 @@ CREATE TABLE homerooms (
     */
 );
 
-DELETE FROM submission WHERE grade=9;
 CREATE TABLE submission (
     id INT NOT NULL AUTO_INCREMENT,
     PRIMARY KEY (id),
@@ -149,4 +148,4 @@ CREATE TABLE forgot (
     resetID VARCHAR(11),
     email TEXT,
     reqTime VARCHAR(20)
-);
\ No newline at end of file
+);
diff --git a/login.py b/login.py
index b72c6d2..1553454 100644
--- a/login.py
+++ b/login.py
@@ -190,7 +190,7 @@ def chgPassword():
                         <hr>
                         <small>This email was sent automatically. Please do not reply.<br>
                         這個郵件是自動發送的，請不要回覆。</small>
-                        """ % (str(datetime.now(tz)), request.form['new_username'], str(datetime.now(tz)), request.form['new_username']))
+                        """ % (datetime.now(tz).strftime("%Y-%m-%d %H:%M:%S"), request.form['new_username'], datetime.now(tz).strftime("%Y-%m-%d %H:%M:%S"), request.form['new_username']))
                     flash(
                         '修改密碼成功，請重新登入<br>Password changed successfully. Please login again.')
                     return redirect('/')
@@ -284,9 +284,10 @@ def resetPassword():
                 """, (request.args.get('resetCode'),))
                 user = cursor.fetchone()
                 cursor.close()
+                dtnow = datetime.now(tz).replace(tzinfo=None)
                 if user == None:
                     raise Exception('無此重置密碼代碼<br>Invalid reset password code')
-                if (datetime.now(tz) - datetime.strptime(user[2], '%Y-%m-%d %H:%M:%S')).seconds > 3600:
+                if (dtnow - datetime.strptime(user[2], '%Y-%m-%d %H:%M:%S')).seconds > 3600:
                     cursor.execute("DELETE FROM forgot WHERE resetID = %s", (user[0],))
                     db.commit()
                     cursor.close()