To activate push notifications:

1. Tap on the “Messages” tab in the navigation bar at the bottom of your screen.
2. Locate the conversation/channel for which you would like to receive notifications and tap on the grey bell icon to the right. (You might need to give the app permission to send you notifications. If this is the case, tap “Allow” on the popup box that appears)
3. Once the bell turns green, you will be able to receive push notifications for that channel.