This is a log:
[Sun Jun 4 00:00:02 CEST 2017] ===Starting cron===
[Sun Jun 4 00:00:02 CEST 2017] ===End cron===
[Sun Jun 11 00:00:01 CEST 2017] ===Starting cron===
[Sun Jun 11 00:00:01 CEST 2017] ===End cron===
[Sun Jun 18 00:00:02 CEST 2017] ===Starting cron===
[Sun Jun 18 00:00:02 CEST 2017] ===End cron===
[Sun Jun 25 00:00:01 CEST 2017] ===Starting cron===
[Sun Jun 25 00:00:01 CEST 2017] ===End cron===
[Fri Jun 30 14:08:32 CEST 2017] Registering account
[Fri Jun 30 14:08:33 CEST 2017] Registered
[Fri Jun 30 14:08:34 CEST 2017] Update success.
[Fri Jun 30 14:08:34 CEST 2017] ACCOUNT_THUMBPRINT='5YqlcTDTsATZ5bO-Gu6GllyGWlLWwve8VTvxWFIF1VQ'
[Fri Jun 30 14:08:34 CEST 2017] Creating domain key
[Fri Jun 30 14:08:34 CEST 2017] The domain key is here: /root/.acme.sh/mydomein.org/mydomein.org.key
[Fri Jun 30 14:08:34 CEST 2017] Multi domain='DNS:www.mydomein.org,DNS:cp.mydomein.org,DNS:stats.mydomein.org,DNS:webmail.mydomein.org'
[Fri Jun 30 14:08:34 CEST 2017] Getting domain auth token for each domain
[Fri Jun 30 14:08:34 CEST 2017] Getting webroot for domain='mydomein.org'
[Fri Jun 30 14:08:34 CEST 2017] Getting new-authz for domain='mydomein.org'
[Fri Jun 30 14:08:36 CEST 2017] The new-authz request is ok.
[Fri Jun 30 14:08:36 CEST 2017] Getting webroot for domain='www.mydomein.org'
[Fri Jun 30 14:08:36 CEST 2017] Getting new-authz for domain='www.mydomein.org'
[Fri Jun 30 14:08:37 CEST 2017] The new-authz request is ok.
[Fri Jun 30 14:08:37 CEST 2017] Getting webroot for domain='cp.mydomein.org'
[Fri Jun 30 14:08:37 CEST 2017] Getting new-authz for domain='cp.mydomein.org'
[Fri Jun 30 14:08:38 CEST 2017] The new-authz request is ok.
[Fri Jun 30 14:08:38 CEST 2017] Getting webroot for domain='stats.mydomein.org'
[Fri Jun 30 14:08:38 CEST 2017] Getting new-authz for domain='stats.mydomein.org'
[Fri Jun 30 14:08:39 CEST 2017] The new-authz request is ok.
[Fri Jun 30 14:08:39 CEST 2017] Getting webroot for domain='webmail.mydomein.org'
[Fri Jun 30 14:08:39 CEST 2017] Getting new-authz for domain='webmail.mydomein.org'
[Fri Jun 30 14:08:40 CEST 2017] The new-authz request is ok.
[Fri Jun 30 14:08:40 CEST 2017] Verifying:mydomein.org
[Fri Jun 30 14:08:43 CEST 2017] Success
[Fri Jun 30 14:08:43 CEST 2017] Verifying:www.mydomein.org
[Fri Jun 30 14:08:48 CEST 2017] Success
[Fri Jun 30 14:08:48 CEST 2017] Verifying:cp.mydomein.org
[Fri Jun 30 14:08:52 CEST 2017] cp.mydomein.org:Verify error:No valid IP addresses found for cp.mydomein.org
[Fri Jun 30 14:08:52 CEST 2017] Please add '--debug' or '--log' to check more details.
[Fri Jun 30 14:08:52 CEST 2017] See: https://github.com/Neilpang/acme.sh/wiki/How-to-debug-acme.sh