Various methods are already shared here but again i am sharing this simple method:
*Install Wazapp from openwhatsapp.org Do not try to register,
*Now activate terminal,
*Install WazappPath from openrepos.net
*Now open Wazapp and try registration,
*Upon getting code register your account on wazapp
*After successfully registering exit Wazapp
*Now open Whatsup and click "Import Profile of Wazapp"
when everything done you can safely remove Wazapp.
Please note that you can not update your profile picture but contact syncing is working well.
Best wishes.