Big Sur Notifications and Do Not Disturb Problems

I don’t know what is going on, but Big Sur seems to keep putting my MacBook into Do Not Disturb mode and sometimes I can’t get it to exit that mode. I have played with all the normal System Preferences like activate DND when screen locked, but it is not behaving as expected.

I also don’t seem to get notifications showing properly. For example, Messages don’t make a ding noise and don’t flag as banners even though those are the settings in place (and everything worked fine on Catalina). Sometimes, not everytime, I hear the noise of a message arriving that you hear on an iphone when you are in the messages app.

Very frustrating - thoughts?