Can't change control scheme or sensitivity?

I have been playing halo 5 but I can’t change my controller scheme. I use bumper jumper and set it to that and get a completely different scheme, changing to any other scheme doesn’t work either. I’m stuck on this one scheme where b is crouch, x is reload, a is jump and lb is thruster, rb is melee. Also I can’t change my sensitivity, its set on 3 and when I change it to even 10 its still slow.