CloudFlare sometimes attempts to verify that I'm a human when requesting a JSON resource [1] on Australia Post's web site, which breaks parcel tracking feature without any visible captcha. The problem can only be diagnosed by using the browser's inspector tool.
Even worse, I get the blanket "You have been blocked" message when I try to manually open the URL and solve the captcha.
I got a HTML with a error message first, but then I tried adding ".json" on the end of the URL and got a JSON with a error message (that the URL is wrong), and then I removed ".json" from the end of te URL and then I got what seems to be the proper JSON response.
Even worse, I get the blanket "You have been blocked" message when I try to manually open the URL and solve the captcha.
[1] https://digitalapi.auspost.com.au/shipments-gateway/v1/watch...