I'd like to disable push notifications.

Please follow these steps to disable notifications:

Settings
1. Go to Settings > Notifications.
2. Turn ON or OFF the needed notifications.

<iOS>
1. Go to Settings > Notifications.
2. Select the game and choose your desired preference.

<Android>
1. Go to Settings > Sounds and notifications > Application notifications.
2. Block or unblock all notifications coming from the game.
(the path may differ depending on the version of Android and your device.)