I own a Samsung Galaxy Tab Pro 8.4, SM-320, 4.4.2 KitKat. I rooted it 3 yrs ago using PC, USB, and Odin. All went well, it was verified but I really didn't utilize the root much. Recently when I attempted to open Titanium backup, it failed to recognize root. I attempted to open SuperSU and got the same message. I have lost root. I'm not a real techy so I'm afraid to attempt to do anything to get root back I can't open SuperSU to remove root, and don't know what to do. Any suggestions are welcomed but please provide specific instructions as Im not sure what I'm doing. Thanks in advance.