Make sure to save in-game progress with Facebook/VK account!
Please note that Facebook/VK only supports one game per account! If others would like to start a new game on your device, they must save it to separate Facebook/VK account.
To connect your game to Facebook/VK, follow these steps:
1.Tap the setting button(gear icon at upper left corner).
2.In the account page, tap the "Facebook connect" button at the left corner, make sure the Facebook account is yours and press "confirm".
Your game is now set to save automatically.