Support
Three places to look, and one address if none of them helps.
Getting started
One help key, from writing it to reading it back in your own product. Start here if you have not integrated yet.
API reference
Every endpoint, with status codes, caching headers and the signature scheme for push. The page you come back to.
The manual
How HelpCCMS works, written in HelpCCMS. Collections, topics, keys, publishing.
Talk to a person
Write to support@helpccms.com. A real person reads it. Include the collection and the key you are asking about and you will save yourself a round trip.
Something broken rather than unclear? Say what you did, what you expected and what happened instead. That is usually enough to find it.