Have trouble with installing letsencrypt

[angelbro]

Hello Mustafa!

First, I'm not good for english, sorry.

I have trouble with installing letsencrypt.
T try install by several ways that explained at this forum, but I always see "failed" messages.

And i found log message like this at "/var/log/acme.sh/acme.sh.log"
==================================
[Mon Nov 14 12:47:29 KST 2016] Registering account
[Mon Nov 14 12:47:31 KST 2016] Registered
[Mon Nov 14 12:47:32 KST 2016] Update success.
[Mon Nov 14 12:47:32 KST 2016] Creating domain key
[Mon Nov 14 12:47:32 KST 2016] Multi domain='DNS:www.moowabo.com,DNS:cp.moowabo.com,DNS:stats.moowabo.com,DNS:webmail.moowabo.com'
[Mon Nov 14 12:47:32 KST 2016] Getting domain auth token for each domain
[Mon Nov 14 12:47:32 KST 2016] Getting webroot for domain='moowabo.com'
[Mon Nov 14 12:47:32 KST 2016] _w='/var/run/letsencrypt'
[Mon Nov 14 12:47:32 KST 2016] Getting new-authz for domain='moowabo.com'
[Mon Nov 14 12:47:33 KST 2016] The new-authz request is ok.
[Mon Nov 14 12:47:33 KST 2016] Getting webroot for domain='www.moowabo.com'
[Mon Nov 14 12:47:33 KST 2016] _w='/var/run/letsencrypt'
[Mon Nov 14 12:47:33 KST 2016] Getting new-authz for domain='www.moowabo.com'
[Mon Nov 14 12:47:34 KST 2016] The new-authz request is ok.
[Mon Nov 14 12:47:34 KST 2016] Getting webroot for domain='cp.moowabo.com'
[Mon Nov 14 12:47:34 KST 2016] _w='/var/run/letsencrypt'
[Mon Nov 14 12:47:34 KST 2016] Getting new-authz for domain='cp.moowabo.com'
[Mon Nov 14 12:47:35 KST 2016] The new-authz request is ok.
[Mon Nov 14 12:47:35 KST 2016] Getting webroot for domain='stats.moowabo.com'
[Mon Nov 14 12:47:35 KST 2016] _w='/var/run/letsencrypt'
[Mon Nov 14 12:47:35 KST 2016] Getting new-authz for domain='stats.moowabo.com'
[Mon Nov 14 12:47:36 KST 2016] The new-authz request is ok.
[Mon Nov 14 12:47:36 KST 2016] Getting webroot for domain='webmail.moowabo.com'
[Mon Nov 14 12:47:36 KST 2016] _w='/var/run/letsencrypt'
[Mon Nov 14 12:47:36 KST 2016] Getting new-authz for domain='webmail.moowabo.com'
[Mon Nov 14 12:47:37 KST 2016] The new-authz request is ok.
[Mon Nov 14 12:47:37 KST 2016] Verifying:moowabo.com
[Mon Nov 14 12:47:41 KST 2016] Success
[Mon Nov 14 12:47:41 KST 2016] Verifying:www.moowabo.com
[Mon Nov 14 12:47:44 KST 2016] Success
[Mon Nov 14 12:47:44 KST 2016] Verifying:cp.moowabo.com
[Mon Nov 14 12:47:47 KST 2016] Success
[Mon Nov 14 12:47:47 KST 2016] Verifying:stats.moowabo.com
[Mon Nov 14 12:47:50 KST 2016] stats.moowabo.com:Verify error:Invalid response from http://stats.moowabo.com/.well-known/acme-challenge/zc1tM4cXC-2vLZzpaSa5v3EV9HFIqZ5-9Q4n1LS1Gqw:
[Mon Nov 14 12:47:50 KST 2016] Please use add '--debug' or '--log' to check more details.
[Mon Nov 14 12:47:50 KST 2016] See: https://github.com/Neilpang/acme.sh/wiki/How-to-debug-acme.sh
===================================

How can I fix that?
Please explain step by step considering my poor server knowledge.

Thank you.

[MRatWork]

If your domain have 'stats' for 'A record' in dns, need waiting until all your ns updated (need propagation time).

[angelbro]

If your domain have 'stats' for 'A record' in dns, need waiting until all your ns updated (need propagation time).

Thanks Mustafa.
Than if i don't need any subdomain (eg. stats,cp,webmail), can I remove this at form claaed "Subject_alt_name" in add ssl_letsencrypt section?

[MRatWork]

Yes.

[angelbro]

Thank you very much.
I apply letsencrypt successfully.