MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
At last check I know he was using 3.6, as what I still use. I'm not sure if it is an issue, but I have seen a few people have issues importing profiles. You can install a separate copy of Cura (3.6) without overwriting your current Cura. See if they upload and then if not I will try to reach out to @ender3guy for you.