Can't unlock apps or connect to the Appdatica Store

I’m in the United States and I’m wondering if maybe that’s the problem? It shows I’m connected to the internet but when I try to open the app store or unlock new apps, it fails every time. I use the correct password and everything, I created an account, but I cannot use or add anything that wasn’t unlocked and already a part of the tablet when I bought it. Can you help me figure this out?