I think I posted this on the wrong board so I’m reposting here. My apologies if you’ve already seen it!
Love the software and have been using - not perfectly - but using it for a long time. 
I had been relying on “recent projects” to find my files, saving backups by emailing myself zip files, etc, because I just hadn’t figured everything out yet. 
But I really dug into it and finally understand the file structure and how to open a past project. I know, I know, it seems obvious to a software engineer - how could I not figure it out?
Here’s where the confusion comes in for me. Scivener creates a folder with the .scriv extension. But if I click on it, it doesn’t open the project. (Yes, I could see it was a folder, but since it had an extension, I expect it to open my project.) I knew that everything in that folder was important, so I was afraid to touch anything in there. Thus the resorting to using “recent projects”
Part of how I finally figured things out is by discussing it with my in-house tech support, a software engineer. So, we discussed this at length and he has a suggestion.
If you had an “open directory” option - like many video playing applications do - this would mean that the user doesn’t have to go into the directory and select the additional file (that doesn’t have the name of their project on it). They can just select the directory (that they named) and say “open.” That might be less confusing to those who don’t speak computer as a second language.
Keep up the good work!