Hi Jeff,
There are a few common factors that can cause a notification to stop working. When opening up the notifications on that table you want to make sure the owner of the notification hasn't recently had their permissions changed or been denied or removed from the application. This will show on the list of notifications for the table. You also want to make sure the Active checkbox is checked so that the notification is still going out. Then I would recommend going over the trigger conditions of the notification again to make sure a record change is happening that would cause it to trigger. If after all those steps you still can't diagnose what is wrong with the notification I would recommend opening a case with the Quick Base Care team so that one of the Care team reps can take a look at that notification with you. You can open a support case by clicking on the question mark icon that appears in the upper right hand corner when in an app and 'Manage Support Cases' or by clicking
here.