When I download the report after conversion, I get a folder containing several files, which one do I need to submit?

What you have downloaded is a .zip-file with a folder containing three subfolders. One subfolder contains technical information, another subfolder contains the visual information, and the third subfolder contains more technical information.

It isn’t, however, one of the subfolders that you need to submit. You need to submit the entire zip-file, simple as that.