Maybe you need to use manual mode? I saw this blog post linked in another thread: https://www.tty1.net/blog/2015/using-letsencrypt-in-manual-mode_en.html
Other thread: Documentation for manual mode
Maybe you need to use manual mode? I saw this blog post linked in another thread: https://www.tty1.net/blog/2015/using-letsencrypt-in-manual-mode_en.html
Other thread: Documentation for manual mode