ZeroSSL certificate query API error after upgrade to Caddy v2.8.4

Thanks, it is way clearer now ! I read the release note earlier but was unsure about the behaviour.
Is there a way to print the full request done by Caddy, so that I have more information to contact ZeroSSL support ?
From what I can see with default logs, I just have the method (POST) and the endpoint but no parameters.