Not recieving notifications from leader announcments

I have been having a bunch of issues with viva tool simply not working the way they say they should. Right now I am focusing on the viva engage issues. 

So basically, when we have leaders make an announcement. Viva engage shows a number of people will get the announcement, and which you click change settings, it shows teams, and email is setup as notifications. But when the post is sent. No one is getting a notification is teams or email.  They don't even get a notification in viva engage. 

This seems very strange behavior, I am wondering if i am missing a setting somewhere but i have looked everywhere i can think and not seen anything. I was hoping the community might have some ideas.