Unable to use this app

I thought this app was supposed to be easy but somehow I’m having a hard time getting it to work. I’m on a Mac. I installed it and created a vault with password. It then created a folder in Documents with the name I gave the vault. If I open the vault, a virtual drive called “localhost” appears in finder. I tried dragging files to this virtual drive but they won’t go in. If I drag files to the folder in Documents, they are never locked up. Can someone please tell me what I’m doing wrong?

The macOS version currently has a WebDAV bug that makes it unuseable. So I would desist until they bring out 1.4.0

Thanks for the info.