Thanks. All of those settings were active.
I have managed to find the problem. I had to disable "Fit Adjustment" in the headset settings. Then I could enable eye tracking. The other issue have was that the eye tracking calibration doesn't work properly. It doesn't show any of the focus tracking points so I had to guess. After a frustrating hour I did overed the I just needed to look at the centre then at 9, 12, 3 and 6 before the centre again. Now tracking works ok again.