Hi Nachung!
Thanks for the system report and screenshot. It lets me know exactly what the problem is.
It seems you do not have Little Reader 2.0 (your screen shot is of Little Reader 1.6) - kindly note that we encourage all users to upgrade to version 2 immediately - not just because we have fixed quite a few issues with 1.6, but also because the new content files and license keys are incompatible with the older version of Little Reader.
First thing you need to do is to install the latest version of your software. Kindly refer to this page for detailed instructions on how to download and install your BrillKids learning system from your BrillKids Account:
Installing and Setting Up Your Little Reader
http://support.brillkids.com/index.php/article/little-reader-install-and-setup-from-accountKindly follow the instructions in chronological order, and you should have everything fixed.
Hope that helps! Do let us know how it goes.
Cheers,
Lappy