Hi,
It was running on
CentOS Linux 7.5.1804 (Core)
Product Plesk Onyx
Version 17.5.3 Update
In /usr/local/psa/admin/logs/panel.log, there is no error indication on it.
I have read the documentation , edit some rules , but i cant really tell does it need iptables or firewalld as the extension just install without issue.
As both iptables or firewalld was inactive. even i made changes on the rules from plesk panel. Thanks if anyone can assist.