problem an website to work

Hey, have installed Virtualmin yesterday going great. But have great problem installed an virtual server And installed wordpress script and link is http://olssondata.se/wordpress/ says not found but change to www.olssondata.se/wordpress/ working but will work on that computers have installed on, tested on another same answer. But try another computers i see apache2 ubuntu default page when use www.olssondata.se checked in apache webserver have 3 virtual servers but have another disk installed virtualmin can try that too if works on that disk first