Problem with downloading game in iPad 2

Hi
I purchased and download black pegesus game to iPad 2. After the game was installed, the app disappears from the screen but credit was deducted .I try to install the apps again but the message show that it was already installed but it is no where to be seen in my iPad. Can someone please advise what I should do ?

Thanks so much !

Check that you don't have Restrictions set in the iPad's 'Settings' app.

The game has an age restriction and, if you've got age restrictions enabled, the icon of the app doesn't even appear on the iPad's Home screen. Take the restriction off and the icon will re-appear.

Tim