Weird error after installing

Hi,

I just installed this plugin. Im very new to building websites etc. In the landing pages preview it shows the website of my hosting company. How can i show the landing page?

http://s30.postimg.org/pgv7j9n8h/Schermafbeelding_2014_04_05_om_17_00_22.png
https://ww.wp.xz.cn/plugins/landing-pages/