When you play on an iOS device, the country in your Apple ID determines which currency you use. If your device is displaying the wrong country or currency, check that the country in your Apple ID is correct.
To check or change your country on your iOS device:
Open the Settings app.
Tap your name, then tap Media & Purchases.
Tap View Account. You might be asked to sign in.
Tap Country/Region.
Tap Change Country or Region.
Tap your new country or region, then review the Terms & Conditions.
Tap Agree in the upper-right corner, then tap Agree again to confirm.
Select a payment method and enter your new payment information and billing address, then tap Next. You must enter a valid payment method for your new country or region.*
Make sure to spend any balance remaining on your Apple ID. If you're not sure whether you have a balance, check your Apple Account balance.
Cancel your subscriptions and wait until the end of the subscription period.