Hi,
If anyone face issue, after creating support tickets it take so much time to create (approx. 15 to 20 min).
You can resolve this issue by customizing CST cron.
You need to run cron every minute (It depends on your requirement).
To run cron every minute
*/1 * * * * curl "https://domain_name/cst/cron.php" > /dev/null
Thanks,