For several years now, Amazon KDP will block books whose content is already available on the web. I have printed a few books whose content was either CC-BY or p

For several years now, Amazon KDP will block books whose content is already available on the web. I have printed a few books whose content was either CC-BY or public domain due to its age, and in each case my book was automatically blocked in the early stages. I had to submit an appeal that was reviewed by a person in order to proceed.