''<p>Gennadiy Edelshteyn [[#question-1494350|said]]</p>'' <blockquote>I’m the owner of www.ductworkinstallation.com Why does your browser keep posting the wrong warning that my website make a security threat to my visitors - this is wrong! </blockquote> The certificate is expired. https://www.ssllabs.com/ssltest/analyze.html?d=www.ductworkinstallation.com&hideResults=on Valid from Wed, 01 Nov 2023 00:00:00 UTC Valid until Thu, 31 Oct 2024 23:59:59 UTC (expired 3 months and 18 days ago) EXPIRED

Btw if this was about Firefox on desktop Windows, Linux and macOS then the thread should be in Firefox section. This section you posted in is for Firefox on iPhone/iPad (iOS/iPadOS)