The latest version of the app keeps logging me out all the time. Plus, the notifications do not show up in the notifications tab

I am having the same problem. I did nothing to the app or the phone, then about two weeks ago, the app stopped keeping me logged in, instead logging me out every time I exit. Also, when I do log in, none of the stocks I follow shows up with a quote, only with the symbol. What changed? What do I do to get the functionality back?

I would suggest reinstalling the app. 

Let me know if that worked for you.