Great! Here's how to write and submit a proper 2FA message template for WhatsApp Cloud API via Meta.

✅ Step-by-Step: Create a 2FA Template

1. Go to WhatsApp Message Templates
	•	Visit: https://business.facebook.com/wa/manage/message-templates
	•	Choose your WhatsApp Business account.
	•	Click “Create Template”

2. Fill Out Template Details
	•	Category: Authentication
	•	Name: two_factor_auth (or any lowercase name with underscores)
	•	Language: Choose your default language (e.g., English (US))

3. Template Content
Use something like:
Your verification code is {{1}}. It will expire in 5 minutes. Do not share it with anyone.
	•	{{1}} is a placeholder for your 2FA code.
	•	Meta will review and approve this. Usually takes a few minutes.
Optional (advanced):
	•	You can also add buttons or security warnings if desired.

4. Use Template in Your Code
Once approved, you'll use the template like this in your PHP:
"template" => [
    "name" => "two_factor_auth",
    "language" => ["code" => "en_US"],
    "components" => [
        [
            "type" => "body",
            "parameters" => [
                ["type" => "text", "text" => "$code"]
            ]
        ]
    ]
]

⚠️ Tips:
	•	Don’t use promotional or vague wording—Meta will reject it.
	•	Always include some security language, like "Do not share it with anyone."

Would you like me to generate a few alternative message template texts that are likely to get approved?