Hi @yeongwoo, thank you for the clarification. It sounds like there is a corrupt installation of the Tobii Core Software as there is still and issue following a re-installation.
I would therefore recommend you try a full uninstaller program such as the free Revo Uninstaller to move all the Tobii Elements for a fresh successful reinstall.
Please try this out and report back, best wishes. It may also be worth looking to see if you have the latest windows 10 update.