I have the same problem on Windows 10 & 11 all behaving the same, click start, program opens, window appears for a few seconds then closes.
I have/had the premium version.
I have tried uninstalling and doing a fresh install, trying both the paid version and free version - making no difference, program behaving the same.
I have tried running with the Internet/wifi turned off, makes no difference.
I have Norton 360 Deluxe version 22.21.11 which is the latest version (auto update enabled)