One more thing.
If you want people from outside your network (the rest of the world) to be able to access your site, you will need to use your WAN (real) IP, and not the LAN IP.
At the moment when I ping your domainname from here I get a LAN IP back. (192.168.0.253)
Again this is no problem if you only want to use the domain on your LAN, but people from outside it will not be able to access it.
When I ping ftp.yourdomain.com I do get the (I think) correct IP back.
Going with my browser to http://ftp.yourdomain.com
, I do also get an ISPconfig page.
Make sure when you try to login with FTP that you use webNR_name
(the ISPconfig User name), and NOT the email address! as login name!