Not seeing the same issue as you.  My log is below.  The error seems to be that it is not finding the API Key (Dynamic DNS ID) when connecting to DNSMadeEasy.  I have verified both the ID and Password and they are valid. [Thu Feb 23 09:01:23 AST 2017] Found domain api file: /usr/local/pkg/acme/dnsapi/dns_me.sh [Thu Feb 23 09:01:23 AST 2017] dns_me_add exists=0 [Thu Feb 23 09:01:23 AST 2017] APP [Thu Feb 23 09:01:23 AST 2017] 4:ME_Key='231XXXX' [Thu Feb 23 09:01:23 AST 2017] APP [Thu Feb 23 09:01:23 AST 2017] 5:ME_Secret='testforSecureXXXXX' [Thu Feb 23 09:01:23 AST 2017] First detect the root zone [Thu Feb 23 09:01:23 AST 2017] name?domainname=secure.accra.ca [Thu Feb 23 09:01:23 AST 2017] GET [Thu Feb 23 09:01:23 AST 2017] url='https://api.dnsmadeeasy.com/V2.0/dns/managed/name?domainname=secure.accra.ca' [Thu Feb 23 09:01:23 AST 2017] timeout [Thu Feb 23 09:01:23 AST 2017] curl exists=0 [Thu Feb 23 09:01:23 AST 2017] wget exists=127 [Thu Feb 23 09:01:23 AST 2017] _CURL='curl -L –silent --dump-header /tmp/acme/accra.ca//http.header ' [Thu Feb 23 09:01:24 AST 2017] ret='0' [Thu Feb 23 09:01:24 AST 2017] response='{error: ["API key not found"]}' [Thu Feb 23 09:01:24 AST 2017] name?domainname=accra.ca [Thu Feb 23 09:01:24 AST 2017] GET [Thu Feb 23 09:01:24 AST 2017] url='https://api.dnsmadeeasy.com/V2.0/dns/managed/name?domainname=accra.ca' [Thu Feb 23 09:01:24 AST 2017] timeout [Thu Feb 23 09:01:24 AST 2017] curl exists=0 [Thu Feb 23 09:01:24 AST 2017] wget exists=127 [Thu Feb 23 09:01:24 AST 2017] _CURL='curl -L –silent --dump-header /tmp/acme/accra.ca//http.header ' [Thu Feb 23 09:01:24 AST 2017] ret='0' [Thu Feb 23 09:01:24 AST 2017] response='{error: ["API key not found"]}' [Thu Feb 23 09:01:24 AST 2017] name?domainname=ca [Thu Feb 23 09:01:24 AST 2017] GET [Thu Feb 23 09:01:24 AST 2017] url='https://api.dnsmadeeasy.com/V2.0/dns/managed/name?domainname=ca' [Thu Feb 23 09:01:24 AST 2017] timeout [Thu Feb 23 09:01:24 AST 2017] curl exists=0 [Thu Feb 23 09:01:24 AST 2017] wget exists=127 [Thu Feb 23 09:01:24 AST 2017] _CURL='curl -L –silent --dump-header /tmp/acme/accra.ca//http.header ' [Thu Feb 23 09:01:25 AST 2017] ret='0' [Thu Feb 23 09:01:25 AST 2017] response='{error: ["API key not found"]}' [Thu Feb 23 09:01:25 AST 2017] invalid domain [Thu Feb 23 09:01:25 AST 2017] Error add txt for domain:_acme-challenge.secure.accra.ca [Thu Feb 23 09:01:25 AST 2017] pid [Thu Feb 23 09:01:25 AST 2017] _clearupdns [Thu Feb 23 09:01:25 AST 2017] Dns not added, skip. [Thu Feb 23 09:01:25 AST 2017] _on_issue_err [Thu Feb 23 09:01:25 AST 2017] Please check log file for more details: /tmp/acme/accra.ca/acme_issuecert.log

doktornotor pointed to the method how to set it up with HAproxy whenthereisn'tawebserveronport80* HOWEVER: The default nginx Webconfigurator, will also listen on port 80 when the "WebGUI redirect" is unchecked (System -> Advanced -> Admin Access) Then, under the certificate under the Services -> ACME, select/edit/create the certificate, you select the webroot local, and then use /usr/local/www/.well-known/acme-challenge/ (See attachment) I suspect when I check that WebGUI redirect disable, then you could use the "standalone HTTP server" option…  

There were some issues with that code path. Update the package to 0.1.7 or later when it shows up and it should work.