princeofthecS do u have the apps4flip launcher? I also have the dura xv and by me it only comes up on the launcher the apps that come from apps4flip I use ES file explorer (that's also from apps4flip) to access my other apps or u can access them by setting on a button with button mapper.
Sometimes when it says not installed its because that app isn't compatible with your phone it might help sometimes if u Bluetooth it to the phone and install it when your in ES file explorer, this app [Login to see the link] lets u change permissions for installing apps via es for example (not sure if this will help, just trying to be helpful)
