The progress on Bluestacks should be restored as necessary. The first thing to do is to access the Settings. Go to Settings > Accounts. Make sure that everything is checked for the account, including Google+. If you don't have Google+ installed, go to Play Store and install it. Secondly, start the game, go to Settings and click on Google+. Connect to Google+ and Link your device. The game should ask you to restore your base. Click Yes then restart the game.