I just got Tobii eye tracker 3 weeks ago and after a few days with my pc failing to recognise it eventually got it sorted. (Tobii support very prompt). I found the Tobii software somewhat limiting so downloaded Opentrack and watched instuctional YouTube video. Wow!!! I just cannot fault Tobii now and would say it works perfectly on MSFS24. I even use it on a setup well outwith the recommended Tobii parameters (44inch widescreen with eye tracker set about 70cm away from screen). Just had to experiment with settings and position to make it perfect.