💡 Common Issues & Solutions
Phone Number Issues:
- Missing country code: Always include + and country code (e.g., +962 for Jordan)
- Invalid format: Remove spaces, dashes, parentheses
- Wrong country code: Verify the correct country code
API Issues:
- Connection timeout: Check internet connection and Zender server status
- Authentication failed: Verify API secret and account ID
- Account suspended: Check account status with Zender
- Insufficient credits: Check account balance
Delivery Issues:
- Number not on WhatsApp: Recipient must have WhatsApp installed
- Blocked sender: Recipient may have blocked business messages
- Network delays: Messages can take several minutes to deliver
- Rate limiting: Too many messages sent too quickly