FB app keeps logging me out

[LWP777]

So I've had the phone for a couple of weeks now. During the past week I'm constantly getting a notification that Facebook has logged me out and I need to sign back in. How do I keep this from happening? It's annoying that I keep checking my notifications only to see that it's just this FB issue.

 

[Paul627g]

Isn't there an option on FB to keep you logged in?