Common Reasons for WhatsApp Business Bans:

1. Messaging Policy Violations

Sending unsolicited messages (spam)
Bulk messaging without proper opt-in
Using automated messaging inappropriately
Sending promotional content outside allowed windows

2. Template Policy Issues

Templates with misleading content
Promotional templates sent without user consent
Templates that don't match actual business purpose
Using templates for purposes other than intended

3. Quality Rating Problems

High block rates from users
High report rates
Low engagement rates
Users frequently marking messages as spam

4. Business Verification Issues

Inconsistent business information
Fake or misleading business details
Using personal accounts for business purposes
Multiple accounts for same business

How to Avoid Future Bans:

1. Follow Messaging Best Practices

// Example: Proper opt-in tracking
function checkOptInStatus($phone_number) {
    // Always verify user has opted in before sending
    $stmt = $mysqli->prepare("SELECT opt_in_status FROM users WHERE phone = ?");
    $stmt->bind_param("s", $phone_number);
    $stmt->execute();
    $result = $stmt->get_result();
    
    if ($row = $result->fetch_assoc()) {
        return $row['opt_in_status'] === 'active';
    }
    return false;
}

// Only send if user has opted in
if (checkOptInStatus($recipient_phone)) {
    // Send message
}

2. Implement Proper Rate Limiting

// Rate limiting to avoid spam detection
function canSendMessage($phone_number) {
    $stmt = $mysqli->prepare("
        SELECT COUNT(*) as msg_count 
        FROM sent_messages 
        WHERE recipient = ? 
        AND sent_at > DATE_SUB(NOW(), INTERVAL 24 HOUR)
    ");
    $stmt->bind_param("s", $phone_number);
    $stmt->execute();
    $result = $stmt->get_result();
    $row = $result->fetch_assoc();
    
    // Limit to 10 messages per day per user
    return $row['msg_count'] < 10;
}

3. Quality Score Management

// Track user interactions to maintain quality
function trackUserInteraction($phone_number, $interaction_type) {
    $stmt = $mysqli->prepare("
        INSERT INTO user_interactions (phone, interaction_type, created_at) 
        VALUES (?, ?, NOW())
    ");
    $stmt->bind_param("ss", $phone_number, $interaction_type);
    $stmt->execute();
}

// Track blocks and reports
function handleUserBlock($phone_number) {
    trackUserInteraction($phone_number, 'blocked');
    
    // Automatically add to do-not-contact list
    $stmt = $mysqli->prepare("
        INSERT INTO blacklist (phone, reason, created_at) 
        VALUES (?, 'user_blocked', NOW())
    ");
    $stmt->bind_param("s", $phone_number);
    $stmt->execute();
}

4. Template Compliance

Use templates only for their intended purpose
Ensure templates are accurate and not misleading
Don't use promotional templates for transactional messages
Keep templates relevant to your actual business

5. Business Profile Setup Best Practices

For New Profiles:

Use Legitimate Business Information
Real business name and address
Consistent information across all platforms
Valid business registration documents
Gradual Scaling
Start with low message volumes
Gradually increase over weeks/months
Monitor quality ratings closely
Separate Business Operations
One business per WhatsApp Business account
Don't create multiple accounts for same business
Use different legitimate businesses if you need multiple accounts

6. Monitoring and Compliance

// Monitor quality metrics
function getQualityMetrics($business_phone) {
    return [
        'sent_count' => getSentMessageCount($business_phone),
        'delivered_count' => getDeliveredCount($business_phone),
        'read_count' => getReadCount($business_phone),
        'blocked_count' => getBlockedCount($business_phone),
        'reported_count' => getReportedCount($business_phone)
    ];
}

// Calculate quality score
function calculateQualityScore($metrics) {
    if ($metrics['sent_count'] == 0) return 0;
    
    $delivery_rate = $metrics['delivered_count'] / $metrics['sent_count'];
    $block_rate = $metrics['blocked_count'] / $metrics['sent_count'];
    $report_rate = $metrics['reported_count'] / $metrics['sent_count'];
    
    // Quality score calculation
    $quality_score = ($delivery_rate * 100) - ($block_rate * 200) - ($report_rate * 300);
    
    return max(0, min(100, $quality_score));
}

7. Opt-in Management

// Proper opt-in handling
function handleOptIn($phone_number, $source) {
    $stmt = $mysqli->prepare("
        INSERT INTO opt_ins (phone, source, opt_in_date, status) 
        VALUES (?, ?, NOW(), 'active')
        ON DUPLICATE KEY UPDATE 
        status = 'active', opt_in_date = NOW()
    ");
    $stmt->bind_param("ss", $phone_number, $source);
    $stmt->execute();
}

// Handle opt-outs immediately
function handleOptOut($phone_number) {
    $stmt = $mysqli->prepare("
        UPDATE opt_ins SET status = 'opted_out', opt_out_date = NOW() 
        WHERE phone = ?
    ");
    $stmt->bind_param("s", $phone_number);
    $stmt->execute();
    
    // Add to blacklist
    $stmt = $mysqli->prepare("
        INSERT INTO blacklist (phone, reason, created_at) 
        VALUES (?, 'user_opt_out', NOW())
    ");
    $stmt->bind_param("s", $phone_number);
    $stmt->execute();
}

Immediate Actions to Take:

Stop All Automated Messaging until you implement proper compliance
Review Your Current Practices against WhatsApp's policies
Implement Opt-in Tracking for all contacts
Add Rate Limiting to your messaging system
Create Proper Business Documentation for new accounts
Use Different Business Entities for new accounts (not just new email addresses)

For New Business Profiles:

Wait 30-60 days before creating new profiles
Use completely different business information
Start with very low message volumes (< 100 messages/day)
Focus on high-engagement, opted-in users
Monitor quality metrics daily

The key is to operate legitimately as a real business with proper user consent, rather than trying to work around the system. WhatsApp's AI can detect patterns across accounts, so simply using new email addresses won't help if you continue the same practices.