Fynchat

Connect Your WhatsApp Business Account

How to link your WhatsApp Business number to Fynchat using two different methods.

Connect WhatsApp screen — start by clicking “Start connecting”

What do you need before you start?

  • A phone number not currently used in the regular WhatsApp app
  • A Meta Business Manager account (created automatically if you don't have one)
  • If you choose manual entry: you need a Phone Number ID + WABA ID + Access Token

Method 1: Embedded Signup (recommended)

The Facebook (Embedded Signup) step: a Facebook window opens to pick your number and approve permissions

The easiest and fastest — Meta handles everything automatically.

  1. Go to /onboarding after logging in
  2. Click "Connect via Embedded Signup"
  3. A Facebook window opens → enter your details
  4. Choose a Business Manager or create a new one
  5. Choose the phone number you want to use
  6. Complete number verification (SMS or call)
  7. Approve the permissions
  8. Done! Your account is connected ✅

Method 2: Manual entry

Use this method if:

  • You already have a WhatsApp Business account with Meta
  • You use a System User Token (for production)
  • Embedded Signup doesn't work in your region

Steps:

  1. Go to Meta Business Manager
  2. WhatsApp Manager → API Setup → copy:
    • Phone Number ID (15 digits)
    • WhatsApp Business Account ID (WABA)
  3. Create a System User Token:
    • Business Settings → System Users → Add
    • Give it a name and assign it the Admin role
    • Generate New Token → choose the app + the permissions:
      • whatsapp_business_management
      • whatsapp_business_messaging
      • business_management
    • Copy the token (you won't see it again)
  4. In Fynchat → Onboarding → "Manual entry" → paste the values → click Connect

After connecting

  • Test sending by sending a message to your personal number from the Inbox screen
  • Create your first template to send a campaign (see: Creating templates)
  • Import contacts from a CSV file

Common issues

  • "Phone Number not found" error: Make sure the number is activated in Meta Business Manager
  • "Token expired": Use a System User Token (long-lived) instead of a User Token (expires after two hours)
  • Embedded Signup shows "Sorry, something went wrong": The app is in Development Mode — contact us

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