Problem on ?page and static page

I really need your advise on how to solve this problem, after creating a static page on >reading settings….and successfully set the main page but all of the pages starting with for example pages with link ?page=store will not display… any workaround on this problem? thanks.. here is the website http://factmedia.info/jbdesign/ the Designs which is linked to ?page=store and My Account link to ?page=myaccount will not display.

Thank you.