OK. Il answer myself for anyone else who may ask.
I had to use Hokusai, download the tracs one at a time, convert them to mono (on Hokusai), and export them from there to cubase 1 track at a time. They showed up in the audio section in the media bay.
Not very user friendly, regarding cubasis. Cubasis doesn’t show up as an option to export to in Dropbox. Is this a bug, is there something I need to do that I don’t know about, or should this be an update suggestion?