Systemtray icon is gone for Tobii Horizon Eye Tracker

For some reason, after I restarted my computer, the Systemtray icon for Tobii Horizon Eye Tracker is gone. The Tobii Experience is turned on and I can still use it, but I always use the icon to turn the Tobii Experience on or off. Now I have to open Tobii Experience, wait for it to load to toggle the Eye Tracker on or off.

How can I get the systemtray icon back?