Server is not loading the default page

My Server is not loading the default page ex epicwars.de only when I try to access the admin page will it show me something. It simply shows me the default apache page and not the wordpress default landing page. What could have happend? Like I said when I try to connect to https://www.epicwars.de/wp-admin.php everything is fine just posts and default pages don’t work. WordPress is installed in the /var/www directory of my Dedicated server.

I hope you guys can help.

Thanks in advance!