Zenonia 5 not opening on nook hd+ :(

[ThatAsian]

I just received my Nook HD+ tablet today. I downloaded and installed Zenonia 5 and it won't open, all I see is a black screen for a sec, then goes to portrait mode and then takes me to my home screen. I tried re installing it a few times and same thing happens.. can someone tell me the reason why it does this? I love this game.