Can't access ispconfig3 on port 8080...

Hey all.
All of a sudden, I can't access ispconfig on port 8080. "This site can't be reached"
Have no idea what could happen, since the last time I accessed it ( maybe a week ago).
What's weird is that I can access webmin(10000) or the default apache(80) on the same server...
How do I get apache to listen on port 8080 ? As it clearly is not listening on port 8080....

apache2ctl -S gives me:
AH00548: NameVirtualHost has no effect and will be removed in the next release /etc/apache2/sites-enabled/000-ispconfig.conf:73
VirtualHost configuration:
*:80 xxx.domain.xxx (/etc/apache2/sites-enabled/000-default.conf:1)
ServerRoot: "/etc/apache2"
Main DocumentRoot: "/var/www/html"
Main ErrorLog: "/var/log/apache2/error.log"
Mutex rewrite-map: using_defaults
Mutex ssl-stapling-refresh: using_defaults
Mutex fcgid-proctbl: using_defaults
Mutex ssl-stapling: using_defaults
Mutex ssl-cache: using_defaults
Mutex default: dir="/var/run/apache2/" mechanism=default
Mutex mpm-accept: using_defaults
Mutex fcgid-pipe: using_defaults
Mutex watchdog-callback: using_defaults
PidFile: "/var/run/apache2/apache2.pid"
Define: DUMP_VHOSTS
Define: DUMP_RUN_CFG
Define: ENABLE_USR_LIB_CGI_BIN
User: name="www-data" id=33 not_used
Group: name="www-data" id=33 not_used

The test script:
##### SERVER #####
IP-address (as per hostname): ***.***.***.***
IP-address(es) (as per ifconfig): ***.***.***.***
[INFO] OS version is Ubuntu 16.04.7 LTS

[INFO] ISPConfig is installed.
[WARN] /usr/local/ispconfig/server/lib/config.inc.php is missing.

##### VERSION CHECK #####

[INFO] php (cli) version is 7.0.33-0ubuntu***.***.***.***

##### PORT CHECK #####

[WARN] Port 8080 (ISPConfig) seems NOT to be listening
[WARN] Port 8081 (ISPConfig Apps) seems NOT to be listening
[WARN] Port 21 (FTP server) seems NOT to be listening

##### MAIL SERVER CHECK #####


##### RUNNING SERVER PROCESSES #####

[WARN] I could not determine which web server is running.
[WARN] I could not determine which mail server is running.
[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)
[anywhere]:993 (-)
[anywhere]:995 (-)
[localhost]:10023 (-)
[localhost]:10024 (-)
[localhost]:10025 (-)
[localhost]:10026 (-)
[localhost]:10027 (-)
[anywhere]:587 (-)
[localhost]:11211 (-)
[anywhere]:110 (-)
[anywhere]:143 (-)
[anywhere]:10000 (-)
[anywhere]:465 (-)
***.***.***.***:53 (-)
[localhost]:53 (-)
[anywhere]:22 (-)
[anywhere]:25 (-)
[localhost]:953 (-)
*:*:*:*::*:993 (-)
*:*:*:*::*:995 (-)
*:*:*:*::*:10023 (-)
*:*:*:*::*:3306 (-)
*:*:*:*::*:587 (-)
[localhost]10 (-)
[localhost]43 (-)
*:*:*:*::*:80 (-)
[localhost]0000 (-)
*:*:*:*::*:465 (-)
*:*:*:*::*:53 (-)
*:*:*:*::*:22 (-)
*:*:*:*::*:25 (-)
*:*:*:*::*:953 (-)
*:*:*:*::*:443 (-)




##### IPTABLES #####

ls -lh /etc/apache2/sites-enabled/
total 0
lrwxrwxrwx 1 root root 39 Feb 14 2019 000-apps.vhost -> /etc/apache2/sites-available/apps.vhost
lrwxrwxrwx 1 root root 35 Feb 14 2019 000-default.conf -> ../sites-available/000-default.conf
lrwxrwxrwx 1 root root 43 Feb 14 2019 000-ispconfig.conf -> /etc/apache2/sites-available/ispconfig.conf
lrwxrwxrwx 1 root root 44 Feb 14 2019 000-ispconfig.vhost -> /etc/apache2/sites-available/ispconfig.vhost


Any help, please? I'm only managing emails on domain, but I really don't want to reinstall the whole thing, as it is a production server.
Thank you!

 

Thank you till. Awesome response time.
See the next post, please.
Is there any other information that may help you help me ?

 

oooppsss.....
my bad...
here is the script ran as root
##### SERVER #####
IP-address (as per hostname): ***.***.***.***
IP-address(es) (as per ifconfig): ***.***.***.***
[INFO] OS version is Ubuntu 16.04.7 LTS

[INFO] ISPConfig is installed.

##### ISPCONFIG #####
ISPConfig version is 3.1dev


##### VERSION CHECK #####

[INFO] php (cli) version is 7.0.33-0ubuntu***.***.***.***

##### PORT CHECK #####

[WARN] Port 8080 (ISPConfig) seems NOT to be listening
[WARN] Port 8081 (ISPConfig Apps) seems NOT to be listening
[WARN] Port 21 (FTP server) seems NOT to be listening

##### MAIL SERVER CHECK #####


##### RUNNING SERVER PROCESSES #####

[INFO] I found the following web server(s):
Apache 2 (PID 4464)
[INFO] I found the following mail server(s):
Postfix (PID 2327)
[INFO] I found the following pop3 server(s):
Dovecot (PID 1643)
[INFO] I found the following imap server(s):
Dovecot (PID 1643)
[WARN] I could not determine which ftp server is running.

##### LISTENING PORTS #####
(only ()
Local (Address)
[anywhere]:993 (1643/dovecot)
[anywhere]:995 (1643/dovecot)
[localhost]:10023 (1914/postgrey.pid)
[localhost]:10024 (2078/amavisd-new)
[localhost]:10025 (2327/master)
[localhost]:10026 (2078/amavisd-new)
[localhost]:10027 (2327/master)
[anywhere]:587 (2327/master)
[localhost]:11211 (1628/memcached)
[anywhere]:110 (1643/dovecot)
[anywhere]:143 (1643/dovecot)
[anywhere]:10000 (2349/perl)
[anywhere]:465 (2327/master)
***.***.***.***:53 (1595/named)
[localhost]:53 (1595/named)
[anywhere]:22 (1640/sshd)
[anywhere]:25 (2327/master)
[localhost]:953 (1595/named)
*:*:*:*::*:993 (1643/dovecot)
*:*:*:*::*:995 (1643/dovecot)
*:*:*:*::*:10023 (1914/postgrey.pid)
*:*:*:*::*:3306 (1976/mysqld)
*:*:*:*::*:587 (2327/master)
[localhost]10 (1643/dovecot)
[localhost]43 (1643/dovecot)
*:*:*:*::*:80 (4464/apache2)
[localhost]0000 (2349/perl)
*:*:*:*::*:465 (2327/master)
*:*:*:*::*:53 (1595/named)
*:*:*:*::*:22 (1640/sshd)
*:*:*:*::*:25 (2327/master)
*:*:*:*::*:953 (1595/named)
*:*:*:*::*:443 (4464/apache2)




##### IPTABLES #####
Chain INPUT (policy ACCEPT)
target prot opt source destination
f2b-dovecot-pop3imap tcp -- [anywhere]/0 [anywhere]/0 multiport dports 110,995,143,993
f2b-postfix-sasl tcp -- [anywhere]/0 [anywhere]/0 multiport dports 25
f2b-sshd tcp -- [anywhere]/0 [anywhere]/0 multiport dports 22

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

Chain f2b-dovecot-pop3imap (1 references)
target prot opt source destination
REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable
REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable
REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable
REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable
REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable
REJECT all -- ***.***.***.*** [anywhere]/0 reject-with icmp-port-unreachable
RETURN all -- [anywhere]/0 [anywhere]/0

Chain f2b-postfix-sasl (1 references)
target prot opt source destination
RETURN all -- [anywhere]/0 [anywhere]/0

Chain f2b-sshd (1 references)
target prot opt source destination
RETURN all -- [anywhere]/0 [anywhere]/0

 

grep Include /etc/apache2/apache2.conf
# Include module configuration:
IncludeOptional mods-enabled/*.load
IncludeOptional mods-enabled/*.conf
# Include list of ports to listen on
Include ports.conf
# Include of directories ignores editors' and dpkg's backup files,
# Include generic snippets of statements
IncludeOptional conf-enabled/*.conf
# Include the virtual host configurations:
IncludeOptional sites-enabled/*.conf

 

AWESOME !!!!!
Thank you till... Thanks a bunch.... This is it! It's back.