have 4s and am not sure when it began but cannot save photos are nit camera related in my photo roll. Furthermore applications have downloaded and should request access are not apparent in my privacy photo settings. What should

My problem began when I wanted to change my screen saver.  At first, I would try to take pictures and download images and they would toatally disappear.  So then I uninstalled my icloud, deactivated my photostream, and supposedly restored my phone to the last back up.  Well atleast now the pictures that I take are not dissappearing into thin air.  However, I have never been able to and I still cant seem to turn on the request for photo applications in my privacy settings.  I am not sure when this initial problem began.  As of now, I am not able to save downloaded photos to my camera roll and applications that  request access to my photos are not displayed in my privacy settings to even accept the request. This is very frustrating and I am not sure what to do. 

I have tried everything from disabling and enabling my icloud, disabling and enabling my photo stream, stopping the photo app and restarting it, and even restoring it to the last itunes backup.