diff --git a/blockly_unix_database.db b/blockly_unix_database.db
index 90cf56f..521965a 100644
Binary files a/blockly_unix_database.db and b/blockly_unix_database.db differ
diff --git a/index.html b/index.html
index 15385ba..9dfeb2b 100644
--- a/index.html
+++ b/index.html
@@ -14,6 +14,8 @@
     <script src="https://unpkg.com/@blockly/workspace-backpack@latest"></script>
     <script src="https://unpkg.com/@blockly/plugin-cross-tab-copy-paste@latest"></script>
     <script src="js/el.js"></script>
+    <script src="msg/en.js"></script>
+
     <!-- <script src="https://unpkg.com/@blockly/block-plus-minus"></script> -->
 
     <!-- BLOCKS DEFINITION -->
@@ -51,7 +53,6 @@
     <script src="blocks/lsBlock.js"></script>
     <script src="blocks/cdBlock.js"></script>
     <script src="blocks/mkdirBlock.js"></script>
-    <script src="blocks/gzipBlock.js"></script>
     <script src="blocks/grepBlock.js"></script>
     <script src="blocks/sedBlock.js"></script>
     <script src="blocks/awkBlock.js"></script>
@@ -135,9 +136,6 @@
         <button id="homePage" class="icon-button" title="HomePage">
           <i class="fas fa-home"></i>
         </button>
-        <form id="homePageForm" action="/" method="POST" style="display: none">
-          <input type="hidden" name="_method" value="POST" />
-        </form>
 
         <form
           id="logoutForm"
@@ -157,15 +155,6 @@
         >
           <i class="fas fa-sign-out-alt"></i>
         </button>
-
-        <form
-          id="loginForm"
-          action="/login"
-          method="POST"
-          style="display: none"
-        >
-          <input type="hidden" name="_method" value="POST" />
-        </form>
         <button
           id="loginButton"
           class="icon-button"
@@ -174,14 +163,6 @@
         >
           <i class="fas fa-sign-in-alt"></i>
         </button>
-        <form
-          id="registerForm"
-          action="/register"
-          method="POST"
-          style="display: none"
-        >
-          <input type="hidden" name="_method" value="POST" />
-        </form>
         <button
           id="registerButton"
           class="icon-button"
@@ -346,7 +327,7 @@
         contents: [
           {
             kind: 'category',
-            name: 'Text Processing',
+            name: [MSG.TEXT_PROCESSING],
             colour: '#4CAF50',
             contents: [
               { kind: 'block', type: 'head' },
@@ -365,7 +346,7 @@
           },
           {
             kind: 'category',
-            name: 'File inputs',
+            name: [MSG.FILE_INPUTS],
             colour: '#5C81A6',
             contents: [
               { kind: 'block', type: 'filename' },
@@ -378,7 +359,7 @@
           },
           {
             kind: 'category',
-            name: 'File and Directory Operations',
+            name: [MSG.FILE_DIR_OPERATIONS],
             colour: '#FE9B13',
             contents: [
               { kind: 'block', type: 'ls' },
@@ -397,7 +378,7 @@
           },
           {
             kind: 'category',
-            name: 'I/O Redirection',
+            name: [MSG.IO_REDIRECTION],
             colour: '#1976D2',
             contents: [
               { kind: 'block', type: 'save' },
@@ -410,7 +391,7 @@
           },
           {
             kind: 'category',
-            name: 'Regular Expressions',
+            name: [MSG.REGULAR_EXPRESSIONS],
             colour: '#FF5733',
             contents: [
               { kind: 'block', type: 'regOutput' },
@@ -433,7 +414,7 @@
           },
           {
             kind: 'category',
-            name: 'System Monitoring',
+            name: [MSG.SYSTEM_MONITORING],
             colour: '#9C27B0',
             contents: [
               { kind: 'block', type: 'ps' },
@@ -449,7 +430,7 @@
           },
           {
             kind: 'category',
-            name: 'Network Operations',
+            name: [MSG.NETWORK_OPERATIONS],
             colour: '#FFC107',
             contents: [
               { kind: 'block', type: 'ssh' },
@@ -463,7 +444,7 @@
           },
           {
             kind: 'category',
-            name: 'Data Processing',
+            name: [MSG.DATA_PROCESSING],
             colour: '#3B7C09',
             contents: [
               { kind: 'block', type: 'beginEnd' },
@@ -476,7 +457,7 @@
               { kind: 'block', type: 'xargs' },
               {
                 kind: 'category',
-                name: 'Text output',
+                name: [MSG.TEXT_OUTPUT],
                 colour: '160',
                 contents: [
                   { kind: 'block', type: 'text' },
@@ -499,7 +480,7 @@
               },
               {
                 kind: 'category',
-                name: 'Logic',
+                name: [MSG.LOGIC],
                 colour: '210',
                 contents: [
                   { kind: 'block', type: 'controls_if' },
@@ -510,7 +491,7 @@
               },
               {
                 kind: 'category',
-                name: 'Loops',
+                name: [MSG.LOOPS],
                 colour: '120',
                 contents: [
                   { kind: 'block', type: 'controls_whileUntil' },
@@ -519,7 +500,7 @@
               },
               {
                 kind: 'category',
-                name: 'Math',
+                name: [MSG.MATH],
                 colour: '230',
                 contents: [
                   { kind: 'block', type: 'math_number' },
@@ -554,7 +535,7 @@
           },
           {
             kind: 'category',
-            name: 'Variables',
+            name: [MSG.VARIABLES],
             colour: '330',
             custom: 'VARIABLE'
           },
@@ -564,7 +545,7 @@
           },
           {
             kind: 'category',
-            name: 'Other Commands',
+            name: [MSG.OTHER_COMMANDS],
             colour: '#009688',
             contents: [
               { kind: 'block', type: 'kill' },
diff --git a/passport-config.js b/passport-config.js
index ec5e177..76495ac 100644
--- a/passport-config.js
+++ b/passport-config.js
@@ -1,11 +1,7 @@
 const LocalStrategy = require('passport-local').Strategy;
 const bcrypt = require('bcrypt');
-const passport = require('passport');
-const GoogleStrategy = require('passport-google-oauth20').Strategy;
-const sqlite3 = require('sqlite3').verbose();
-const db = new sqlite3.Database('./blockly_unix_database.db');
 
-// Initialize function to set up LocalStrategy and Google OAuth
+// Initialize function to set up LocalStrategy
 function initialize(passport, getUserByUsername, getUserById) {
   // Local Strategy for login
   const authenticateUser = async (username, password, done) => {
@@ -39,9 +35,10 @@ function initialize(passport, getUserByUsername, getUserById) {
 
   // Serialize user into the session
   passport.serializeUser((user, done) => {
-    done(null, user.id); // Χρησιμοποίησε το `id` από τη βάση δεδομένων
+    done(null, user.id); // Use the `id` from the database
   });
 
+  // Deserialize user from the session
   passport.deserializeUser((id, done) => {
     getUserById(id, (err, user) => {
       if (err) return done(err);
@@ -49,4 +46,5 @@ function initialize(passport, getUserByUsername, getUserById) {
     });
   });
 }
+
 module.exports = initialize;
diff --git a/public/blocks/pingBlock.js b/public/blocks/pingBlock.js
index 9e7ae71..9385721 100644
--- a/public/blocks/pingBlock.js
+++ b/public/blocks/pingBlock.js
@@ -15,7 +15,7 @@ var pingBlock = {
     {
       type: 'field_input',
       name: 'address',
-      text: '8.8.8.8'
+      text: 'hostname'
     }
   ],
 
diff --git a/public/blocks/psBlock.js b/public/blocks/psBlock.js
index 2f20b24..4de0f94 100644
--- a/public/blocks/psBlock.js
+++ b/public/blocks/psBlock.js
@@ -27,7 +27,7 @@ var psBlock = {
     {
       type: 'field_input',
       name: 'show_process_user',
-      text: ''
+      text: 'user'
     }
   ],
   message3: '%{BKY_PS_SHOW_PID}',
@@ -35,7 +35,7 @@ var psBlock = {
     {
       type: 'field_input',
       name: 'show_process_pid',
-      text: ''
+      text: 'pid'
     }
   ],
   message4: '%{BKY_PS_FORMAT}',
@@ -43,7 +43,7 @@ var psBlock = {
     {
       type: 'field_input',
       name: 'format',
-      text: ''
+      text: 'format'
     }
   ],
   message5: '%{BKY_PS_SHOW_THREAD}',
diff --git a/public/msg/el.js b/public/msg/el.js
index 0c786c1..5237e45 100644
--- a/public/msg/el.js
+++ b/public/msg/el.js
@@ -1,4 +1,4 @@
-var MSG_EL = {
+window.MSG = {
   TEXT_PROCESSING: 'Επεξεργασία Κειμένου',
   FILE_INPUTS: 'Είσοδοι Αρχείων',
   FILE_DIR_OPERATIONS: 'Λειτουργίες Αρχείων και Καταλόγων',
@@ -6,6 +6,13 @@ var MSG_EL = {
   REGULAR_EXPRESSIONS: 'Κανονικές Εκφράσεις',
   DATA_PROCESSING: 'Επεξεργασία Δεδομένων',
   VARIABLES: 'Μεταβλητές',
+  SYSTEM_MONITORING: 'Παρακολούθηση Συστήματος',
+  NETWORK_OPERATIONS: 'Λειτουργίες Δικτύου',
+  TEXT_OUTPUT: 'Έξοδος Κειμένου',
+  LOGIC: 'Λογική',
+  LOOPS: 'Βρόχοι',
+  MATH: 'Μαθηματικά',
+  OTHER_COMMANDS: 'Άλλες Εντολές',
   title: 'Κώδικας',
   blocks: 'Μπλοκ',
   linkTooltip: 'Αποθήκευση και σύνδεση με τα μπλοκ.',
diff --git a/public/msg/en.js b/public/msg/en.js
index a74e66d..b62b1cd 100644
--- a/public/msg/en.js
+++ b/public/msg/en.js
@@ -1,4 +1,4 @@
-var MSG_EN = {
+window.MSG = {
   TEXT_PROCESSING: 'Text Processing',
   FILE_INPUTS: 'File Inputs',
   FILE_DIR_OPERATIONS: 'File and Directory Operations',
@@ -6,7 +6,13 @@ var MSG_EN = {
   REGULAR_EXPRESSIONS: 'Regular Expressions',
   DATA_PROCESSING: 'Data Processing',
   VARIABLES: 'Variables',
-
+  SYSTEM_MONITORING: 'System Monitoring',
+  NETWORK_OPERATIONS: 'Network Operations',
+  TEXT_OUTPUT: 'Text Output',
+  LOGIC: 'Logic',
+  LOOPS: 'Loops',
+  MATH: 'Math',
+  OTHER_COMMANDS: 'Other Commands',
   title: 'Code',
   blocks: 'Blocks',
   linkTooltip: 'Save and link to blocks.',
diff --git a/server.js b/server.js
index 69ba9b4..510a03d 100644
--- a/server.js
+++ b/server.js
@@ -9,15 +9,11 @@ if (process.env.NODE_ENV !== 'production') {
 const express = require('express');
 const app = express();
 const path = require('path');
-
-//Replace when integrate with database
-const users = [];
 const bcrypt = require('bcrypt'); // Importing bcrypt library
 const passport = require('passport');
 const initializePassport = require('./passport-config');
 const flash = require('express-flash');
 const session = require('express-session');
-const methodOverride = require('method-override');
 const jwt = require('jsonwebtoken');
 const cookieParser = require('cookie-parser');
 const sqlite3 = require('sqlite3').verbose();
@@ -60,7 +56,6 @@ app.use(
 );
 app.use(passport.initialize());
 app.use(passport.session());
-app.use(methodOverride('_method'));
 app.use(cookieParser());
 app.set('view engine', 'ejs');
 
@@ -69,14 +64,6 @@ app.use((req, res, next) => {
   next();
 });
 
-app.use((req, res, next) => {
-  if (req.session) {
-    req.session._garbage = Date();
-    req.session.touch();
-  }
-  next();
-});
-
 // Middleware to add auth token
 function addAuthToken(req, res, next) {
   if (req.isAuthenticated()) {
@@ -229,16 +216,6 @@ app.get('/register', checkNotAuthenticated, (req, res) => {
   res.render('register', { errorMessages: req.flash('error') || [] });
 });
 
-app.delete('/logout', (req, res, next) => {
-  res.clearCookie('remember_me');
-  req.logOut((err) => {
-    if (err) {
-      return next(err);
-    }
-    res.redirect('/');
-  });
-});
-
 app.get('/logout', function (req, res, next) {
   if (req.session) {
     req.session.destroy(function (err) {
@@ -407,9 +384,6 @@ function checkNotAuthenticated(req, res, next) {
 
 const GoogleStrategy = require('passport-google-oauth20').Strategy;
 
-app.use(passport.initialize());
-app.use(passport.session());
-
 passport.use(
   new GoogleStrategy(
     {