Display a blank page

Hello,

I installed MobileJoomla with a redirect to i.mydomainname.ch (iphone) and m.mydomainname.ch (smartphone). the problem is that it always shows me a blank page, and when I test it with my PC displays the following error:
"Forbidden

You do not have permission to access / on this server. "

Most likely you setup it as separate subdomains instead of aliases to the main domain, or you have domain-based restrictions in .htaccess (or other configuration file of your webserver).