Overview
The most frequent WhatsApp issues involve connection (channel disconnected), pairing (QR/phone) and re-authentication (the session must be redone). Most are fixed by checking the connection and re-pairing.
Prerequisites
- Administrator access to the WhatsApp inbox.
- The number's device/source available to re-authenticate if needed.
Step by step
- Open the WhatsApp inbox and check the connection status.
- If disconnected, try to reconnect/re-authenticate from the inbox.
- For WhatsApp Web, rescan the QR code or re-pair by phone.
- For WhatsApp Cloud, check the credentials and the number's status on Meta.
- After reconnecting, send a test message to confirm.
Settings & options
- Connection status: connected, pairing, disconnected, logged out.
- Re-authentication: redoes the session when WhatsApp requires it.
Use cases
- Restore a number that dropped after instability.
- Re-pair after swapping/wiping the device.
Tips, limits & best practices
- Keep the device/source stable and online (for WhatsApp Web).
- Avoid practices that trigger blocks (see the limits & anti-ban article).
Troubleshooting
- QR doesn't show: reload the connection wizard and try again.
- Drops right after connecting: check source stability and the gateway webhooks.
- Cloud error: verify number, verification and credentials on Meta.