Can't add LetsEncrypt to domain

[xx7879]

I want to add SSL to my domain in VestaCP GUI.

When I add LetsEncrypt to my domain for the first time, showed will be ready in 5 minute, but not added.
When I tried again, showed time-out after about 5 minute, still not added.

I'm using default templates and Proxy Support.
This is a fresh install on Centos 7x86 64:

Code: Select all

curl -O http://vestacp.com/pub/vst-install.sh
bash vst-install.sh --nginx yes --apache yes --phpfpm no --vsftpd yes --proftpd no --exim yes --dovecot yes --spamassassin no --clamav no --named yes --iptables no --fail2ban no --mysql yes --postgresql no --remi yes --quota no


What should I do?
Please help, thanks