Fix this ... help !!

Okay i have the iphone 5s and i use snapchat about everyday ! I have so much friends and i have streaks too !! But every time i go on now.. i cant message anyone it leaves me right on the spot where you take pictures and says i have to allow Camera Access in my settings . It wont work anymore and very disappointed please help ?

Cameron !! about Snapchat, v10.3.1.0