diff --git a/ast_monitor/model.py b/ast_monitor/model.py
index 42d8609..2a2fc93 100644
--- a/ast_monitor/model.py
+++ b/ast_monitor/model.py
@@ -1,6 +1,7 @@
 import glob
 import json
 import os
+import socket
 import socketserver
 
 from PyQt6.QtCore import QThread, pyqtSignal
@@ -82,6 +83,10 @@ def initialize_GUI(self) -> None:
         """
         QMainWindow.__init__(self, flags=Qt.WindowType.FramelessWindowHint)
         Ui_MainWindow.__init__(self)
+        self._cleanup_complete = False
+        self.timer = None
+        self.view = None
+        self.channel = None
         self.setupUi(self)
 
         # Map setting (not working on Raspberry Pi
@@ -123,6 +128,51 @@ def initialize_GUI(self) -> None:
         self.timer.timeout.connect(self.render_data)
         self.timer.start(250)
 
+    def closeEvent(self, event):
+        """Release resources that Qt WebEngine keeps outside the widget tree."""
+        self.cleanup()
+        super().closeEvent(event)
+
+    def cleanup(self) -> None:
+        """
+        Stop background resources owned by the main window.
+
+        PyQt's WebEngine objects need an explicit deleteLater/processEvents cycle
+        in tests, otherwise Qt prints profile-release warnings at interpreter exit.
+        """
+        if self._cleanup_complete:
+            return
+        self._cleanup_complete = True
+
+        if self.timer is not None:
+            self.timer.stop()
+
+        if hasattr(self, "server_thread") and self.server_thread:
+            self.server_thread.stop()
+            self.server_thread.wait(3000)
+
+        if self.view is not None:
+            try:
+                self.view.loadFinished.disconnect(self.on_load_finished)
+            except (TypeError, RuntimeError):
+                pass
+            try:
+                self.view.stop()
+            except RuntimeError:
+                pass
+            try:
+                self.view.page().setWebChannel(None)
+            except RuntimeError:
+                pass
+            self.view.close()
+            self.view.setParent(None)
+            self.view.deleteLater()
+            self.view = None
+
+        if self.channel is not None:
+            self.channel.deleteLater()
+            self.channel = None
+
     def update_map_component(self, progress: float = None, remaining_distance: float = None,
                              remaining_ascent: float = None, speed: float = None,
                              heartrate: int = None, duration=None, distance=None,
@@ -493,6 +543,7 @@ def convert_time_to_hours_minutes_seconds(self, time: int) -> str:
         return time
 
 class CustomTCPServer(socketserver.TCPServer):
+    allow_reuse_address = True
     logging = True
     
     def __init__(self, server_address, RequestHandlerClass, bind_and_activate=True, logging=True):
@@ -511,17 +562,26 @@ def __init__(self, server_port: int, logging=True):
         self.running = True
         self.server_port = server_port
         self.logging = logging
+        self.httpd = None
 
     def run(self):
         """
         Method that runs the HTTP server.
         """        
         Handler = CustomHandler
-        with CustomTCPServer(("", self.server_port), Handler,self.logging) as httpd:
+        with CustomTCPServer(("", self.server_port), Handler, logging=self.logging) as httpd:
+            httpd.timeout = 0.2
+            self.httpd = httpd
             self.signal.emit(f"Serving at http://localhost:{self.server_port}")
             while self.running:
                 httpd.handle_request()
+            self.httpd = None
 
     def stop(self):
         """Method that stops the HTTP server."""
         self.running = False
+        try:
+            with socket.create_connection(("127.0.0.1", self.server_port), timeout=0.2):
+                pass
+        except OSError:
+            pass
diff --git a/tests/test_gui.py b/tests/test_gui.py
index 483bec3..8352a18 100644
--- a/tests/test_gui.py
+++ b/tests/test_gui.py
@@ -1,23 +1,36 @@
-import sys,os,random
+import os
+import random
 import pytest
+from PyQt6.QtCore import QEvent
+from PyQt6.QtWidgets import QApplication
 
 try:
     from ast_monitor.model import AST
 except ModuleNotFoundError:
-    sys.path.append('../')
+    import sys
+    sys.path.append("../")
     from ast_monitor.model import AST
-   
 
 
 @pytest.fixture
 def widget(qtbot):
-    hr_data = os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', 'sensor_data', 'hr.txt')
-    gps_data = os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', 'sensor_data', 'gps.txt')
-    route_data = os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', 'development', 'routes', 'route.json')
-    random_port = random.randint(8000, 9000)    
-    window = AST(hr_data, gps_data, route_data,server_port=random_port,logging=False)
+    hr_data = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "sensor_data", "hr.txt")
+    gps_data = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "sensor_data", "gps.txt")
+    route_data = os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "development", "routes", "route.json")
+    random_port = random.randint(8000, 9000)
+
+    window = AST(hr_data, gps_data, route_data, server_port=random_port, logging=False)
     qtbot.addWidget(window)
-    return window
+
+    yield window
+
+
+    window.cleanup()
+    window.close()
+    window.deleteLater()
+    QApplication.processEvents()
+    QApplication.sendPostedEvents(None, QEvent.Type.DeferredDelete)
+    qtbot.wait(100)
     
 
 def test_window_title(qtbot,widget):    
@@ -56,7 +69,6 @@ def test_start_stop_tracking(qtbot,widget):
     assert widget.widget_start_stop.currentIndex() == 0 # Shows start icon, is stopped
     widget.server_thread.stop()
 
-@pytest.mark.skip(reason="Skipping this test temporarily")
 def test_load_training(qtbot,widget):    
     widget.btn_move_right.click() # Move to Training page
     widget.btn_load_training.click() # Load training