To purchase gems, tap on the plus sign on the right side of your gems at the top left corner of the screen.
The game will show you the recommended package. To check other packages, tap on the close button at the top right corner of the screen. Select your choice of package.
The checkout page will appear. Please click on the Payment method to display all options and then select Redeem Code.
Enter the Google Play voucher code and click on the Redeem Button.
