Hello, Here are some possible ways to troubleshoot and fix the solution ; #'''Clear Cache & Cookies:''' Settings > Privacy & Security > Cookies and Site Data > Manage Data, search for WhatsApp, and remove it. #'''Disable Extensions:''' Temporarily turn off privacy tool extensions that might block the site. #'''Force Refresh:''' Ctrl+F5 or Ctrl+Shift+R (Mac: Cmd+Shift+R) #'''Troubleshoot Mode:''' (Help > Troubleshoot Mode) to check for problematic extensions #'''Check Privacy Settings:''' If you use "Delete cookies and site data when Firefox is closed," ensure an exception is added for web.whatsapp.com. #'''Re-pair Device:''' Log out of all sessions on your mobile WhatsApp app and re-scan the QR code.