I have installed ISPConfig 3 and got no error message. I did it without SSL for the interface. I go to the browser xxx.xxx.xxx.xxxx:8080 and I get the apache default index.html located at /var/www/html How can I check what's wrong? I am using Debian 9 Thanks for your help!
Check whether you have ispconfig.vhost file ("updatedb; locate ispconfig.vhost") and if it's there, restart apache and see whether you get ISPConfig login page. If it's not, your might want to reinstall your ISPConfig.