When I was trying to add a new vault or add the existing one, if I try to pick a path for the vault, the program crashes (the main windows disappear and the icon in tray is gone).
I am in Windows 11, my another laptop with the same Windows 11 setup doesn’t have the issue. I tried to uninstall the existing one and download a latest version. Problem persists.
What I should do to fix that?
Welcome to the Cryptomator Community 
this sounds a lot like Cryptomator Crashing · Issue #3351 · cryptomator/cryptomator · GitHub
This issue will be fixed with the next Cryptomator release. The workaround is to uninstall the Dokany application. But note that other programs, which depend on Dokany, might not work correctly afterwards.
Thank you Infeo, I’ve uninstall the Dokany so that Cryptomator can work.