User Alert Settings - NIR Notifications

Summary

Not all users receive email alert for their tasks in NIR workflow

Content

Hello, 

Only two of the six people in a role assigned to a NIR workflow task are receiving email alerts. I was under the idea that if I configured the notification settings to 'all' in BPM Worklist - administration, then an in app alert and email would be triggered. During previous testing a few months ago, this worked for all users. 

One of the users receives approval request emails, but no task notification email. The role assigned to the approval group and the group assigned NIR tasks is the same role.