POST requests to /wp-admin/admin-ajax.php trigger Cloudflare challenges even though robots.txt says bots can use that route

[EchoingRuby]

POST /wp-admin/admin-ajax.php cannot be accessed by bots (even though it's explicitly allowed in robots.txt) because the route returns a Cloudflare captcha challenge.

Potential fixes:

1. Change robots.txt to also disallow /wp-admin/admin-ajax.php.
2. Remove Cloudflare protection from /wp-admin/admin-ajax.php.