Hello Sir

I think you can install whatsapp on your mac. just watch this vidio and try to follow

i hope this will help u  https://www.youtube.com/watch?v=wvoej8-Bd2Q

I had already seen that, but got puzzled by the statement "You’ll need to have WhatsApp working and associated with a phone number first." If I had WhatsApp working, I wouldn't need WhatsMac!

Hello Dan.  

I do not use Mac OS X or WhatsApp but take a look at this.

http://osxdaily.com/2015/05/25/whatsapp-for-mac-whatsmac-app/

WhatsApp is a popular messaging tool for iPhone, Android, Blackberry, and Windows phone users, but it has long been missing desktop clients… until now, anyway. For Mac users, you can now chat through WhatsApp directly from OS X by using a free app called WhatsMac.

The only scial media apps I could download on it are Line and we chat. Never could get Whatsapp or Hellotalk