What is the Chat Mutes option?

This option allows you to manage any chat mutes that you have activated. Tapping the Edit button to the right will bring up a list of players that you have muted (this can be done by tapping the box to the right of a player name on a chat screen and tapping Mute).

To unmute any of these players, simply tap on the green ticks on the right of the screen so that they are no longer ticked. Once you are happy with your changes, tap the Update button to confirm.