Firstly, in order to fix the issue, check your Internet connection. If you are able to connect to Internet, open your Android device and navigate to Settings > All Settings > Apps/Applications, select Google Play Store from the list and clear all cache and data. After that, access the official web page and download and install the utility using the green Install button. If the issue persists, use support@whatsapp.com email address to get in touch with the support team.
