When I try to open a project that I have created recently, it only shows folders, and there is nothing to open and edit.
When opening a project, the folder structure will be created. Once saved, the creation of an .xstage file should appear inside that folder structure. This is the main link to opening your scene, but it works with the folder structure. I suggest saving whenever you create a new scene file. If you still don’t see the xstage file inside the file structure of your scene, try contacting firstname.lastname@example.org and they’ll be able to help you out.