🔍 FACEBOOK WEBHOOK CONFIGURATION CHECK
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1️⃣ SYSTEM FACEBOOK CONFIG:
   ❌ No active config found!

2️⃣ FACEBOOK PAGES:
   ❌ No active pages found!

3️⃣ BOT SCRIPTS:
   - Active scripts: 0

4️⃣ RECENT WEBHOOKS (Last 5):
   ⚠️ No conversations found - webhook not receiving messages?

5️⃣ ENDPOINT ACCESSIBILITY:
   - Current URL: https://chat.dtdagency.vn//debug_webhook.php
   - Accessible: ✅ YES

6️⃣ NEXT STEPS:
   1. Go to: https://developers.facebook.com/apps
   2. Select your App → Messenger → Settings
   3. Set Callback URL to: https://chat.dtdagency.vn//debug_webhook.php
   4. Set Verify Token to: [CHECK DATABASE]
   5. Click 'Verify and Save'
   6. Subscribe to 'messages' webhook field
   7. Send a test message to your page

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Check complete!