India is not in the list. But whatsapp payments are already available in India. So is Facebook pay something very different from whatsapp pay ? It's confusing

India is not in the list. But whatsapp payments are already available in India. So is Facebook pay something very different from whatsapp pay ? It's confusing since the page says "Facebook Pay is a seamless, secure way to pay on the apps you already use". And whatsapp is listed as one app. Maybe it's entirely different from UPI based Whatsapp pay.