“Firstly, don’t bother contacting Bing Support. This support is simply non-existent. Nobody will reply to your emails, and nobody will care unless you are heavy paying customer.”
Every indexed page on Więckiewicz’s site vanished from Bing in January 2023, and with it his DuckDuckGo results. His daughter’s site on the same domain, built the same way, was untouched. Bing Webmaster Tools offers a 70-character title rule and a 125 KB HTML warning, and no reason. One quiet flag in Redmond deletes a site from two search engines.