Deadbeat123, have you tried this on the app or the website? On the website, it should be under the "More" tab. Let me know if you can see those preferences.
Deadbeat123, I was just notified that the notifications center is no longer under the "More" Tab. It is now in the "gear" icon near the top right side of the screen.
Do you click that icon on the far right?
What browser are you using? It works for me in Win10 Chrome.