Group Management - Sending Notification to Group List

I have a sheet set up with an automated workflow and I'm trying to send to a group list I set up in Group Management. I receive the notification as the sender but the members of the group do not receive the notification. Some users are shared to the sheet and others are not...and, none of them are receiving the notification. Under the automation settings I have unrestricted selected. What steps can I take to troubleshoot the issue? Thank you in advance for your help!