
On Android or iOS, you can take advantage of cashback rewards and other offers if you opted in to earning cashbacks and discounts during the setup process. In the new Google Pay app, tap the Explore icon. You can scan a product code or QR code to see any rewards on it.
If you’re on iOS, you need to create a Japanese iTunes account. There are several guides for that on the net. Type in your email and password in the next screen, then confirm with the orange button. Most of the time, Google Play Store errors are caused by intermittent or slow internet. If you are on mobile data, try to connect the device to a strong Wi-Fi network.

