Hi @MichaelLiu1024 thanks for posting on the forum and welcome to the SimScale Community 
It’s a bit difficult to tell what the issue is exactly without having a look at your project in particular - if you share it with support you can still paste the browser’s URL here for us to take a closer look. As to your comment:
You should be able to make your projects public by enabling this setting on your dashboard:
We also have this article on our Knwoledge Base which might be helpful:
Cheers
Igor