I ask my students to “heart” my lessons when they study them so that I can keep track of which lessons are being studied. Normally I receive a notification for each heart.
For over a week I have received no notifications of “hearts” although my students say they have been giving them. If I look at the individual lessons, I can see that they have been hearted, but I have received no notifications with student names and lesson names.
I checked my settings, and I do have notifications for hearts turned on.