App download on my tablet

Hi ,

I have recently purchased a tablet from mini Gadget,model MG638 , and am having trouble downloading apps.
when they tried to download and install , i get an error message saying that I am unable load China Android.

When on the internet it does seem to have a chinese preference when searching and loads .com pages automatically instead of .co.uk

Please bear with me ,i have tried looking at the settings and pressing things, but not having much luck.
this was brought for my little boy to download apps and play games on so any help would be much appreciated.

thanks,

David.