Having the same issue, did some digging. Looks like the maintainer is currently slammed with a project and won’t be able to update to 2.0 for a while. There is a good alternative, though. The blogger importer extended plugin seems to do the trick.
See the full thread here.
for me, I noticed my link was bad. Once I fixed the link, it worked fine.
an example on my website can be found here
