Perhaps because the private beta was closed two days ago: <a href="https:&#x2F;&#x2F;community.letsencrypt.org&#x2F;t&#x2F;beta-program-announcements&#x2F;1631&#x2F;8" rel="nofollow">https:&#x2F;&#x2F;community.letsencrypt.org&#x2F;t&#x2F;beta-program-announcemen...</a>