Can't get Focus 3 accompanying eye tracker accessory to work inside unity

[Munzer Abusham]

I've been trying to solve this issue for sometime now. I am trying to read eye tracking data to use for an experiment that I am working on using the eye tracking accessory for Focus 3. I've followed this tutorial here to enable eye tracking inside Unity but I can't seem to get it to work. I keep getting the following error with no data output:

Wave.Essence.Eye.EyeManager StartEyeTrackingLock() result: WVR_Error_FeatureNotSupport, status: UNSUPPORT

This looks to me like Unity is not detecting the eye tracking accessory but I am not sure if it is actually the case. Anyone running into the same issue or know how to fix it? I tried various version of Unity including the latest official release but the error persists.