You can import all pages from our demo including contacts page and blog via admin panel -> Dummy Content. Here is a video tutorial with our theme installation process https://www.youtube.com/watch?v=0QPBt-lRWLA
It seems that you didn’t imported “Base content” as shown in our installation tutorial. In this case you need to set up it manually. Simply create blank page called “Blog”. Then go to Settings -> Reading and set this page to “Page for posts”.
Could you send us a link where we can see the problem with Google Maps?