Comment by harikb
As a developer, I tried building an app that needs to use Whatsapp for communication. Unfortunately my phone number got blocked by the second test message. No Spam. Not marketing, just a test message to my own number. Along with it, they blocked my entire business, my LLC, and anything tied to it.
I have been trying to get hold of anyone or anything at Whatsapp. I've spent 6 months trying to navigate the bureaucracy. Facebook support claims they can't touch WhatsApp; WhatsApp support ignores the Facebook side. If you're building on WA, have a backup plan.
If any Whatsapp employee reading this can look into my WBA Account 1117362643780814
The number is only checked at login, and after that you can now create a WebAuthn passkey (iCloud Keychain/Google Passwords synced to your next phone) for future sign-ins so it's actually only needed for first sign up. So just get a prepaid SIM or eSIM and make another account unless your business is so large that tons of people know your number.