im very new to all this so please bare with me. i recently purchased another phantom 2 vision . when i attempted to register the mobile app with my e mail address it stated address already registered. as i looked under the " about " setting i noticed it showed naza 3.12 . does this mean im in naza mode or gps mode . also my phantom will not hover. it mover all around. on screen display keeps jumping from gps to no gps assist. please someone with info. this is very frustrating as im new to this. thanks.