之前有人反應會跳出尚未購買app的訊息，我上了外國網站查了一下解決方法， 這邊提出兩項解決方法。 (一). 刪除遊戲APP後至Google Play商店下載正式版，正常執行後關閉遊戲(不用先執行遊戲應該也沒問題，單純以防萬一)，接著刪除遊戲APP，接著安裝修改版即可正常下載資料。
First Solution is to get that particular Games license from the play store. to get the license go to play store and start downloading that game.when downloading starts you will have your license.now whenever you install that Game’s APK you will not get this error instead Data files will start downloading directly. but when there is a paid game then you can not follow this Tip at all. If you have a Paid App or Game then Follow the second Quick Fix.
(二). 把遊戲APP刪除並重新安裝一次，接著先別打開遊戲，將附件檔案放到資料夾"Android/obb/"之後再開啟遊戲。
The other and best solution to fix “Download Failed Because You May Not Have Purchased This App Error” is that you must place data folder properly.First of all install the APK File and do not open it just yet. now copy your downloaded folder (it should be like this com.rockstargames.bully) in Android/obb/ . so full path would look like this Android/Obb/com.rockstargames.bully. only after placing data folder start your game. and game will work fine.
