Advising anyone to install Flash, emphasis on old version, on their Android device is such a bad thing to do. Adobe stopped supporting Flash for mobile devices over three years ago. Adobe's Flash has become a really big exploit magnet, even current versions plugins for computer browsers have devolved into a serious security problem. Intentionally adding an older, even less secure, version of Flash onto an Android device is also intentionally making less safe to use online.
As for the Candy Crush needing Adobe Flash Player, that may have been applicable for playing via a web browser on a computer but it just can't apply for an Android app. But it is odd you're getting a message your Lenovo isn't compatible. Using a web browser on a computer, check play.google.store. Is your Lenovo Tab 2 listed in the Android Device Manager in the gear icon in the upper right corner?