# FAQ ## Getting 405 Error with This URL is returned in the create new order API of ACME server. It is not a certificate URL on Peeringhub's CR ( Certificate Repository ). This link can only be accessed via ACME protocol and only through the ACME client with their public key. They cannot simply download it using unsigned GET request. Your Stir/Shaken certificate must be hosted in a CR ( certificate repository ) ACME protocol doesn't support certificate hosting we also provide certificate repository free of charge to host your certificate. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://doc.peeringhub.io/guides/faq.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.