Hello Yilong,
Thanks for reaching us!
In order to debug your issue, I need some more information from you:
1. Have you purchased the OptiSystem license or are you using the evaluation license (for 30-days)? If you have a purchased license, then please share the license serial number.
2. Can you please share the snapshots of the error messages you get? We did not receive it.
Can you please share all the above information at support@optiwave.com please. We will take it further from there. In the mean time, we will start looking into the issue you reported.
Best,
Saurabh Bedi.