Why is my phone app Show Notification greyed out?

[Android Central Question]

Galaxy S21 on AT&T. Started a few weeks ago and I can't figure it out. Not showing missed call or voicemail notifications in the notification bar.
DND and Airplane mode are both disable.

 

[B. Diddy]

Welcome to Android Central! Are you saying the Show Notifications toggle is OFF and greyed out?

Please register on this forum, which will allow you to engage in discussion more easily, as well as post images. https://forums.androidcentral.com/ask-question/409154-join-android-central-community.html

 

[mustang7757]

Can you post a screenshot?

https://forums.androidcentral.com/showthread.php?t=413366