Describe the bug

The address and phone number form fields are configured and available in the backend settings, but they do not appear on the frontend.

Expected Behavior:
Upon enabling the address and phone number fields in the Mailchimp setup under Merge Fields Included, these fields should be visible and accessible on the frontend.

Steps to Reproduce

1. Navigate to the WordPress Admin Dashboard.
2. Go to "Settings" and select "Mailchimp Setup" from the dropdown menu.
3. Inside the Mailchimp setup, locate and click on "Merge Fields Included".
4. Enable the fields for "Address" and "Phone Number".
5. Save the settings
6. Visit the frontend of the website.
7. Observe that the address and phone number fields do not appear on the subscription form.

Screenshots, screen recording, code snippet

Environment information

Testing Environment

WordPress: 6.5.4
Theme: Twenty Twenty-Four 1.1
PHP: 8.1.23
Web Server: Nginx 1.20.2
Browser: Chrome
OS: macOS Ventura 13.3

WordPress information

No response

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