There are two types of notifications:
The Reminder Notification will be sent to you daily with a specific message, at whatever time you choose. Use it to remind yourself to act, for example: pause and consider who has given you something, so you can record thanks in here.
This is a reliable message, but it doesn't contain any details about activity that might be especially interesting to you.
The New Activity Notification will be sent to you when there is new, relevant activity for you. It will only trigger if something involves you or a project of interest; it will not bug you for other, general activity.
This type is not as reliable as a Reminder Notification because mobile devices often suppress
such notifications to save battery. (If you want to quickly check for relevant activity daily,
use the Reminder Notification and open the app and look for a large green button that points out new
activity that is personal to you. We are working on other ways to notify you more
reliably --