Doesn’t work anymore

As of December 2019 I think this is definitely broken. I have tried uploading an Interaction and a Quiz and neither one of them work. I publish the content and save it as a .zip. When trying to upload the .zip file the plugin keeps telling me that it isn’t a .zip file. I’m not sure how something like that breaks, but as of now this plugin is 100% useless. I hope the creator updates it and figures out what is going on, because this is the kind of functionality I would gladly pay to have on my site.