Root My phone keeps losing root with no updates or restart

[Root Question]

I have a Samsung Galaxy Note 4 N910T.
I have been trying for hours to get it rooted.
Using Kingo root I can root it successfully, but every time less than 10 minutes later my phone is no longer rooted. Sometimes it works, and sometimes it doesn't.
Using Kingo rooting app I sometimes get error code: 0x132718 (believe it has to do with connection issue?)
Rooting my phone with the computer version sometimes works . . .
Using odin I get

<ID:0/004> Added!!
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> CF-Auto-Root-trltetmo-trltetmo-smn910t.tar.md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/004> Odin v.3 engine (ID:4)..
<ID:0/004> File analysis..
<ID:0/004> SetupConnection..
<ID:0/004> Initialzation..
<ID:0/004> Get PIT for mapping..
<ID:0/004> Firmware update start..
<ID:0/004> recovery.img
<ID:0/004> NAND Write Start!!
<ID:0/004> cache.img.ext4
<ID:0/004> FAIL! (Auth)
<OSM> All threads completed. (succeed 0 / failed 1)