If you have turned off notifications for your game, but you are still receiving notifications, you will need to turn them off within your phone's settings. To do this, please follow the following steps:

1. Locate your phone's settings.

2. Find "Apps" within your settings and click on it.

3. Select Harry Potter: Hogwarts Mystery from your app list.

4. Once on the app's settings, click on "Notifications."

5. From there, select "Block all" notifications.

Once you've done that, you should stop receiving notifications!