Open registration. You do not need an invitation code. Setup asks for your profile name and WhatsApp number, then your business name, team size and role. Phone OTP delivery is not configured yet; the number remains unverified, and you can still finish setup. Email verification and password recovery are also not currently available.
After you have access
Connect an eligible WhatsApp Business account using the onboarding options available to your business, add contacts, and use an approved template for a campaign. Meta permissions, account and phone number eligibility, and template approval apply.