Architecture: RESTful Subscription - Uses the WordPress REST API for a smooth, no-page-reload submission.
Security: Secure Credentials - Supports environment variables/constants in wp-config.php to securely store API keys outside the database.
Auditing: Comprehensive Logging - Logs all subscription events, HTTP codes, and errors to a custom database table for reporting and debugging.
Admin UI: Dedicated admin page to view subscription reports and export data to a CSV file.