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.
harikb|1 month ago
I can't do any of the above,
1. Requesting a new test number. Test numbers are placeholder 555 number that works only within WhatsApp test network. Can't get one.
2. Registering a new, real phone number (SIM obtained from a regular tele provider)
3. Disconnecting the WhatsApp product from the Facebook App to reset the integration.
Although the FB app is being used, I don't have any WhatsAppp users (because I have not even made the product), so wiping out any WBA accounts and starting fresh is also okay, if someone can do this.