If you simply want to view the ScrapBook X data, using the "output HTML tree" feature would be an easier approach. (But you have to get an old-Firefox-like browser with ScrapBook X installed, of course.)

If want to add new data to the tree, you do have to transfer to Web ScrapBook and dig in the site indexing feature. It seems like you met a bug on your platform, but it just doesn't happen on our (and probably most users') machine, and you'd have to provide more detail for us to debug.

Please provide your OS, browser, and Web ScrapBook name and versions. And a more detailed steps to reproduce the issue (a short movie or a series of screenshots would be helpful). Also check the browser console for an error message when nothing happens as expected when you've picked a folder.

It'd be better to post the issue in our issue tracker (https://github.com/danny0838/webscrapbook/issues) since the AMO feedback area is not good enough to propagate an issue.

Sorry for not being friendly enough for the UI, since there's too many things to be implemented, and we need a lot more time to optimize the UI. If you have a specific suggestion it's also welcomed to share it.