You can control push notifications for Firefox through your phone or tablet's settings.

Turn notifications on or off

1. Open the Settings app on your iPhone or iPad.
2. Scroll down to your list of apps and choose Firefox.
3. Tap Notifications.
4. Tap the switch next to Allow Notifications to turn it on (green: ) or off.

   

From here, you can also change your notification style and other options, such as showing or hiding previews.