Both seem to use JetPack for Wordpress to generate their sitemaps. I've tried tricking blog2epub into using the Wordpress crawler (since these aren't at .wordpress.com I appended ?dummy=.wordpress.com to the url), which the debug flag confirms is working, but still both detect 0 articles to crawl. I have an old epub from acoup, which was successfully generated around 2024-01-05 with blog2epub v1.2.5, before sitemaps.xml was introduced for scraping.