We addressed this a while ago, with the auto-restarted, which will automatically restart couatl in case it crashes. That is, assuming your issue is that it crashed it, that is disappeared from the Traybar icon.
If, instead, it was still running, that's surely fixed by restarting it from the Tray icon.
The issue is, the autorestarter can only detect if the Couatl engine crashed, it cannot possibly say that is "stuck" for example because Simconnect is not sending any data, usually because of having reached the maximum Simobjects limit in the sim OR because of issues in the Navdata itself, which are the most likely causes of the menu stuck, when the Couatl engine is still running.