What happened to Do Not Disturb in lollipop?

I just got a free app called Do not disturb.. So much better than interruptions. I like simple. My Gs5 used to have a small button on the pull down I touched it for DND and touched it to turn it off. it was awesome. Not everything in my life needs to be on a schedule.
 
Is there a place where we can say we want this feature back? I don't want to have to set a schedule all the time when a button would do what I wanted.
 
I miss my DND. I have 5.02 and now am only able to set interruptions for M,T, W, Th, F, Sat there is NO Sunday listed. None of the screen shots on the net even match what I'm seeing on my screen. I have an unlocked former AT&T HTC One M8 and am bummed beyond belief. I'd like to know who we can contact to really complain. Is there a way to roll back?