SITE PROPERTIES:

provider.module.message.enabled=true
then restart site properties.

CUSTOMER PROPERTIES:

MOBILE_APP_MESSAGE_ADMIN_ON_SESSION_NOTE_UPDATE true
MOBILE_APP_MESSAGE_COACHES_ON_SESSION_NOTE_UPDATE true

Allow message updates to be viewed by any user. Add the user id after the customer property. available from version 14.7.0-b73 onwards.

MOBILE_APP_MESSAGE_USERS_ON_SESSION_NOTE_UPDATE_USER57 true