Cocktail Master funktioniert nicht

Welcome to Cocktail Master - our cool cocktail mixing game for cocktail connoisseurs! Pour, shake and serve!  At first most of the win was locked(gray color), when you use the available wine to achieve a high point, some of the wine will be unlocked.  Our barman is in your hands, but watch out, he's a bit partial to a cocktail himself!  Pour different wine, add ice cubes and lemons, then shake it.  At last press serve, Our barman will give you a point.  The higher score you got, more wines you can use to achieve a higher score.  Serve the drink to the bartender and find out what he thinks about it.  Make a choice out of 20 drinks and mix them.  Your score will presented all over the world via Game Center, try hard to be the Cocktail Master.