diff --git a/front/maintenance.php b/front/maintenance.php
index 1d46c5a8..0a87da8f 100755
--- a/front/maintenance.php
+++ b/front/maintenance.php
@@ -327,37 +327,37 @@ $db->close();
         <div class="tab-pane" id="tab_DBTools">
                 <div class="db_info_table">
                     <div class="db_info_table_row">
-                        <div class="db_tools_table_cell_a" style="">
+                        <div class="db_tools_table_cell_a" >
                             <button type="button" class="btn btn-default pa-btn pa-btn-delete bg-red dbtools-button" id="btnDeleteMAC" onclick="askDeleteDevicesWithEmptyMACs()"><?= lang('Maintenance_Tool_del_empty_macs');?></button>
                         </div>
                         <div class="db_tools_table_cell_b"><?= lang('Maintenance_Tool_del_empty_macs_text');?></div>
                     </div>
                     <div class="db_info_table_row">
-                        <div class="db_tools_table_cell_a" style="">
+                        <div class="db_tools_table_cell_a" >
                             <button type="button" class="btn btn-default pa-btn pa-btn-delete bg-red dbtools-button" id="btnDeleteMAC" onclick="askDeleteAllDevices()"><?= lang('Maintenance_Tool_del_alldev');?></button>
                         </div>
                         <div class="db_tools_table_cell_b"><?= lang('Maintenance_Tool_del_alldev_text');?></div>
                     </div>
                     <div class="db_info_table_row">
-                        <div class="db_tools_table_cell_a" style="">
+                        <div class="db_tools_table_cell_a" >
                             <button type="button" class="btn btn-default pa-btn pa-btn-delete bg-red dbtools-button" id="btnDeleteUnknown" onclick="askDeleteUnknown()"><?= lang('Maintenance_Tool_del_unknowndev');?></button>
                         </div>
                         <div class="db_tools_table_cell_b"><?= lang('Maintenance_Tool_del_unknowndev_text');?></div>
                     </div>
                     <div class="db_info_table_row">
-                        <div class="db_tools_table_cell_a" style="">
+                        <div class="db_tools_table_cell_a" >
                             <button type="button" class="btn btn-default pa-btn pa-btn-delete bg-red dbtools-button" id="btnDeleteEvents" onclick="askDeleteEvents()"><?= lang('Maintenance_Tool_del_allevents');?></button>
                         </div>
                         <div class="db_tools_table_cell_b"><?= lang('Maintenance_Tool_del_allevents_text');?></div>
                     </div>
                     <div class="db_info_table_row">
-                        <div class="db_tools_table_cell_a" style="">
+                        <div class="db_tools_table_cell_a" >
                             <button type="button" class="btn btn-default pa-btn pa-btn-delete bg-red dbtools-button" id="btnDeleteEvents30" onclick="askDeleteEvents30()"><?= lang('Maintenance_Tool_del_allevents30');?></button>
                         </div>
                         <div class="db_tools_table_cell_b"><?= lang('Maintenance_Tool_del_allevents30_text');?></div>
                     </div>
                     <div class="db_info_table_row">
-                        <div class="db_tools_table_cell_a" style="">
+                        <div class="db_tools_table_cell_a" >
                             <button type="button" class="btn btn-default pa-btn pa-btn-delete bg-red dbtools-button" id="btnDeleteActHistory" onclick="askDeleteActHistory()"><?= lang('Maintenance_Tool_del_ActHistory');?></button>
                         </div>
                         <div class="db_tools_table_cell_b"><?= lang('Maintenance_Tool_del_ActHistory_text');?></div>
@@ -367,31 +367,31 @@ $db->close();
         <div class="tab-pane" id="tab_BackupRestore">
                 <div class="db_info_table">
                     <div class="db_info_table_row">
-                        <div class="db_tools_table_cell_a" style="">
+                        <div class="db_tools_table_cell_a" >
                             <button type="button" class="btn btn-default pa-btn pa-btn-delete bg-red dbtools-button" id="btnPiaBackupDBtoArchive" onclick="askPiaBackupDBtoArchive()"><?= lang('Maintenance_Tool_backup');?></button>
                         </div>
                         <div class="db_tools_table_cell_b"><?= lang('Maintenance_Tool_backup_text');?></div>
                     </div>
                     <div class="db_info_table_row">
-                        <div class="db_tools_table_cell_a" style="">
+                        <div class="db_tools_table_cell_a" >
                             <button type="button" class="btn btn-default pa-btn pa-btn-delete bg-red dbtools-button" id="btnPiaRestoreDBfromArchive" onclick="askPiaRestoreDBfromArchive()"><?= lang('Maintenance_Tool_restore');?><br><?php echo $latestbackup_date;?></button>
                         </div>
                         <div class="db_tools_table_cell_b"><?= lang('Maintenance_Tool_restore_text');?></div>
                     </div>
                     <div class="db_info_table_row">
-                        <div class="db_tools_table_cell_a" style="">
+                        <div class="db_tools_table_cell_a" >
                             <button type="button" class="btn btn-default pa-btn pa-btn-delete bg-red dbtools-button" id="btnPiaPurgeDBBackups" onclick="askPiaPurgeDBBackups()"><?= lang('Maintenance_Tool_purgebackup');?></button>
                         </div>
                         <div class="db_tools_table_cell_b"><?= lang('Maintenance_Tool_purgebackup_text');?></div>
                     </div>
                     <div class="db_info_table_row">
-                        <div class="db_tools_table_cell_a" style="">
+                        <div class="db_tools_table_cell_a" >
                             <button type="button" class="btn btn-default pa-btn bg-green dbtools-button" id="btnExportCSV" onclick="askExportCSV()"><?= lang('Maintenance_Tool_ExportCSV');?></button>
                         </div>
                         <div class="db_tools_table_cell_b"><?= lang('Maintenance_Tool_ExportCSV_text');?></div>
                     </div>
                     <div class="db_info_table_row">
-                        <div class="db_tools_table_cell_a" style="">
+                        <div class="db_tools_table_cell_a" >
                             <button type="button" class="btn btn-default pa-btn pa-btn-delete bg-red dbtools-button" id="btnImportCSV" onclick="askImportCSV()"><?= lang('Maintenance_Tool_ImportCSV');?></button>
                         </div>
                         <div class="db_tools_table_cell_b"><?= lang('Maintenance_Tool_ImportCSV_text');?></div>
@@ -922,8 +922,10 @@ function initializeTabs () {
     $('a[data-toggle="tab"]').on('shown.bs.tab', function (e) {
       var target = $(e.target).attr("href") // activated tab
     });
+
+    hideSpinner();
      
-    }, 50);
+  }, 50);
   
 }
 
diff --git a/front/multiEditCore.php b/front/multiEditCore.php
index bb3db868..7e5fe502 100755
--- a/front/multiEditCore.php
+++ b/front/multiEditCore.php
@@ -192,7 +192,7 @@
         
     })
       
-    }, 50);
+    }, 500);
     
   }
 
diff --git a/front/php/templates/language/it_it.json b/front/php/templates/language/it_it.json
old mode 100644
new mode 100755
diff --git a/server/device.py b/server/device.py
index 2741ab09..8026ca76 100755
--- a/server/device.py
+++ b/server/device.py
@@ -406,7 +406,7 @@ def query_MAC_vendor (pMAC):
     pMACstr = str(pMAC)
     
     # Check MAC parameter
-    mac = pMACstr.replace (':','')
+    mac = pMACstr.replace (':','').lower()
     if len(pMACstr) != 17 or len(mac) != 12 :
         return -2 # return -2 if ignored MAC
 
@@ -417,14 +417,15 @@ def query_MAC_vendor (pMAC):
     try:
         with open(vendorsPath, 'r') as f:
             for line in f:
-                if line.startswith(mac_start_string6):                    
+                line_lower = line.lower()  # Convert line to lowercase for case-insensitive matching
+                if line_lower.startswith(mac_start_string6):                 
                     parts = line.split(' ', 1)
                     if len(parts) > 1:
                         vendor = parts[1].strip()
                         mylog('debug', [f"[Vendor Check] Found '{vendor}' for '{pMAC}' in {vendorsPath}"])
                         return vendor
                     else:
-                        mylog('debug', [f'[Vendor Check] ⚠ ERROR: Match found, but line could not be processed: "{line}"'])
+                        mylog('debug', [f'[Vendor Check] ⚠ ERROR: Match found, but line could not be processed: "{line_lower}"'])
                         return -1