For those having problems. It looks like the last error message means you are on 2.82. Just go download blender 2.80 (like the heading says!) and this release works fine. You don't need 2.82 now if your workflow is only this. Chill and let the team work on maintaining this plugin through the updates.
Download 2.80 from blender's archive here: https://download.blender.org/release/Blender2.80/
Install per the instructions at the beginning of this thread.
Works just fine!