Blank Homepage

Hi,
i´ve installed the template on a website, and i decided to use a different shopping cart.
im now using joomshoping, and i want my homepage to be a K2 Category layout.
but if a add a menu for k2 categories, it works perfectly, when i put it as homepage, the page stays blank.

How can i fix it?
this is the website
http://www.extrememx.net/site/

all the best!

Please go to template options and in the first tab make sure that you've enable mainbody and component in Main Body - FrontPage field.

thanks for the help! it works now!