I'm not receiving the WhatsApp account validation SMS

As a first step, we invite you to consult the WhatsApp FAQ which deals with the subject of not receiving validation SMS messages :

Android:
https://urlr.me/GWNVr 

iOS:
https://urlr.me/tkXbP 

Here are the procedures for validating your account if the SMS cannot be sent by WhatsApp:

1. A message appears on the screen asking you to check the number and try again in 1 hour.
2. When you click OK, an option "you have not received a verification code" is immediately displayed on the screen.
3. Selecting this option opens a new page with a "Call me" button.
4. Click on this option to finalize the verification of your WhatsApp account.

If you follow all the steps of the process and it still doesn't work, don't hesitate to report the incident to WhatsApp support.