Anwar, when you venture into DNA and genealogy you have to be prepared to accept that findings change as new information comes out. Sometimes we have to apply a little bit of common sense.
Your recent ancestry is Utah Mormon, and your male line traces back to a man named Brown in colonial North Carolina.
But DNA Tribes is telling you you're Spanish, and the Khazar project is telling you you're from the royal Davidic line. Think about that for a few minutes. It doesn't quite add up. It should be at least worth considering that your DNA results have been misinterpreted.
(And just as an aside, also maybe worth noting that FTDNA admins are not required to follow a particular line of interpretation. If they were, the Khazar project would not be making such claims.)
It's also worth noting that DNA Tribes has discontinued the test you took. Too much academic criticism.
The sort of thing you're experiencing has happened to me several times over the past 20 years as DNA gets better at these things.
Ten years ago in one of the early ethnic background trials, the results showed my ancestry was almost entirely Swedish. In fact, it should only be about 1/4. I knew to be a skeptical. Nowadays, with new info, my results are much closer to reality -- somewhere around 1/3 to 1/2 Scandinavian (which is broader than just Swedish).
Then too, just five years ago my yDNA group, which is "Middle Eastern", was thought to stem from Jewish merchants in Europe, and to have branched off from the Jews about the time of the Exile. Many of my cousins were scrambling to build new identities about being Jewish. A fair number of them took the Exilarch bait. I was skeptical. Nowadays, our DNA is known to be Neolithic farmers in Europe, and to be particularly concentrated in the area of Switzerland where my ancestors originated.
Finally, it's fun for me to see that you are a descendant of Mormon President Wilford Woodruff. I used to be. I say "used to be" because a few years ago I used DNA to disprove an old family story. So I'm sorry to say now we are not cousins after all ;)