Wildcard subdomains aren't supported yet (but should come in January [1]). [1] https://letsencrypt.org/2017/07/06/wildcard-certificates-coming-jan-2018.html ht

Wildcard subdomains aren't supported yet (but should come in January [1]). [1] https://letsencrypt.org/2017/07/06/wildcard-certificates-coming-jan-2018.html https://letsencrypt.org/2017/07/06/wildcard-certificates-com...