diff --git a/loop/SARA_send_data_v2.py b/loop/SARA_send_data_v2.py
index 04b6cd2..e204d6d 100755
--- a/loop/SARA_send_data_v2.py
+++ b/loop/SARA_send_data_v2.py
@@ -455,6 +455,31 @@ def reset_PSD_CSD_connection():
 
     return pdp_reset_success
 
+def reset_PSD_CSD_connection(profile_id):
+    """
+    Function that reset server hostname (URL) connection for the SARA R5
+        returns true or false
+    """
+    print("⚠️Reseting Server Hostname connection ")
+    http_reset_success = False  # Default fallback
+
+    if profile_id == 0:
+        print('<span style="color: orange;font-weight: bold;">🔧 Resetting AirCarto HTTP Profile</span>')
+        command = f'AT+UHTTP={profile_id},1,"data.nebuleair.fr"\r'
+        ser_sara.write((command + '\r').encode('utf-8'))
+        response_SARA_5 = read_complete_response(ser_sara,  wait_for_lines=["OK"])
+        print(response_SARA_5)
+        time.sleep(1)
+        http_reset_success = response_SARA_5 is not None and "OK" in response_SARA_5
+        if not http_reset_success:
+            print("⚠️ AirCarto HTTP profile reset failed")
+    elif profile_id ==1:
+        #do other things
+    else:
+        print(f"❌ Unsupported profile ID: {profile_id}")
+        http_reset_success = False
+    return http_reset_success
+
 def modem_complete_reboot_and_reinitialize(modem_version, aircarto_profile_id):
     """
     Performs a complete modem restart sequence:
@@ -1056,6 +1081,13 @@ try:
                         print('<p class="text-success">No error detected</p>')
                     elif error_code == 4:
                         print('<p class="text-danger">Error 4: Invalid server Hostname</p>')
+                        send_error_notification(device_id, "UHTTPER (error n°4) -> Invalid Server Hostname")
+                        server_hostname_resets = reset_server_hostname(aircarto_profile_id)
+                        if server_hostname_resets:
+                            print("✅server hostname reset successfully")
+                        else:
+                            print("⛔There were issues with the modem server hostname reinitialize process")
+
                     elif error_code == 11:
                         print('<p class="text-danger">Error 11: Server connection error</p>')
                     elif error_code == 22: