You can turn off your subscription at any time by accessing your Google Play / iTunes account (depending on the platform you play). If you need any further assistance regarding this matter, please contact the relevant customer service directly.

For Android users:

-Launch the Google Play Store app.
-Tap Menu -> My Apps -> Subscriptions and tap on the app of the subscription you’d like to cancel.
(Alternatively, tap Menu -> My Apps -> Tap the app of the subscription you’d like to cancel -> Tap the app’s details page.)
-Tap “Cancel” and “Yes” to confirm the cancellation.

For iOS users:

1. Access Settings in the home of your device;
2. Scroll down and tap iTunes Store and AppStore;
3. Tap your e-mail and Apple ID, View Apple ID and enter your password;
4. Now, tap Subscription - Manage and select
5. Turn off the auto-renewal option and tap Done.