Quick Summary Fix Method Difficulty When to Use Refresh WhatsApp Web Easy Messages appear after a manual refresh Re‑link Device Medium Chats stop syncing completely; QR code re‑pairing required Check Internet Connection Easy Phone or computer has weak or intermittent Wi‑Fi Update Apps & Browser Easy Outdated versions cause sync failures Clear Browser Cache / … Continue reading WhatsApp Web Chats Not Syncing – Fix Delayed or Missing Messages