Eye tracking problem with Quest Pro

Hi,

I am developing an experiment in unity where I need to track users' eye movements and record them in a file. We have two Oculus Quest pros and on one of them, OVREyeGaze works perfectly and I am able to track users' eyes and record them. With the other quest pro though when I run the experiment in unity, OVREyeGaze automatically gets unselected and the eye tracking won't happen. I have enabled all the necessary settings but still, the eye tracking won't work on this quest pro.