Steven ZahmThe notifications are only sent if the changes are made on the site’s frontend using Form. Notifications will not best when making changes using the Link admin profile page.
Also, double check that the user roles you expect to moderate only have the Add Moderated and Edit Moderated capabilities. If they have Add or Edit capabilities the add/edit will not be routed to the moderation queue and no notifications will be sent.
If you are testing as and ormin or other user which has the Ad and/or Edit capabilities, you will not receive notifications, because, you, as the admin know about the add/edit because you have performed them. I mention this because several times in the past users were testing as admin expecting notifications. You need to test has a user with the correct capabilities assigned.
I hope this helps!