The stop script was failing to stop the services and one had to manually kill the process and start it again.
Release :
Please find the script in attachments, to stop the service in the latest RHEL 8.x versions.
Copy the attached file in $ARCOT_HOME/bin directory and restart the service.
If the server's process id is not stopped, then it's in a weird state and there's no watchdog to stop. The next step will force-kill the server instead.