As a chat program, WhatsApp has a mature content rating. If you have configured your content filtering, you will need to set it to at least High maturity.
If you are seeing errors after downloading the app (403, 427, 495, 919, 927 etc.) please check the Google Play Help Center for troubleshooting steps.
If you see a "Not available in your country" error or if the Google Play Help Center troubleshooting tips did not help, you will have to download WhatsApp from our website. You will have to turn on Unknown sources inside Security in your phone settings. We recommend that you turn this back off once you have downloaded WhatsApp from our website.
Cheers,
WhatsApp Support