What is the exact app that you downloaded for WhatsApp? Not a rediculous question. Many people are getting trapped in fake apps while downloding WhatsApp.
Many people that you download are not WhatsApp, but the same type of view is defferent app. And there is a possibility that many programs, including harmful viruses, will come to your device.
Recently, fake WhatsApp has been downloaded more than 10 million times,--------which is quite alaming.
Recently WhatsApps says,
The original WhatsApp has been downloaded 100 billion times. However, hackers have trapped around 100,000 people who have been caught by fake apps.