default apache page after ispconfig installation

Hi,
I've installed ispconfig3 but when I try to access to ip:8080 I see the default apache page
Could someone help me?
here is my ispconfig verification result

##### SERVER #####
IP-address (as per hostname): ***.***.***.***
[WARN] could not determine server's ip address by ifconfig
[INFO] ISPConfig is installed.
##### ISPCONFIG #####
ISPConfig version is 3.1.9
##### VERSION CHECK #####
[INFO] php (cli) version is 7.2.0

##### PORT CHECK #####
[WARN] Port 443 (Webserver SSL) seems NOT to be listening
[WARN] Port 143 (IMAP server) seems NOT to be listening
[WARN] Port 993 (IMAP server SSL) seems NOT to be listening
[WARN] Port 110 (POP3 server) seems NOT to be listening
[WARN] Port 995 (POP3 server SSL) seems NOT to be listening
[WARN] Port 465 (SMTP server SSL) seems NOT to be listening
[WARN] Port 21 (FTP server) seems NOT to be listening

##### MAIL SERVER CHECK #####
[WARN] I found no "submission" entry in your postfix master.cf
[INFO] this is not critical, but if you want to offer port 587 for smtp connections you have to
enable this.
[WARN] I found no "smtps" entry in your postfix master.cf
[INFO] this is not critical, but if you want to offer SSL for smtp (not TLS) connections you ha
ve to enable this.

##### RUNNING SERVER PROCESSES #####
INFO] I found the following web server(s):
Unknown process (httpd) (PID 1870)
[INFO] I found the following mail server(s):
Postfix (PID 1204)
[WARN] I could not determine which pop3 server is running.
[WARN] I could not determine which imap server is running.
[WARN] I could not determine which ftp server is running.
##### LISTENING PORTS #####
(only ()
Local (Address)
***.***.***.***:8080 (1870/httpd)
[anywhere]:22 (1014/sshd)
[anywhere]:25 (1204/master)
*:*:*:*::*:80 (1870/httpd)
*:*:*:*::*:8081 (1870/httpd)
*:*:*:*::*:22 (1014/sshd)
*:*:*:*::*:25 (1204/master)
*:*:*:*::*:3306 (1062/mysqld)
##### IPTABLES #####
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination

 

Honestly, I not remeber. I have read various articles but I do not remeber the specific tutorial I followed....

 

Centos 7....wich services I've to install to correctly configure the server?