This plugin has been closed as of जुलाई 15, 2022 and is not available for download. This closure is temporary, pending a full review.
I've been using this plugin for a while now. I write a niche blog on a technical topic, and I've used the thinkific uploader plugin to transfer articles on relevant topics to my courses. The only issue I have with the plugin is that thinkific does not appear to be maintaining the plugin. I don't think that they've abandoned it, but on the other hand, it hasn't had any revisions in two years and has not been tested by the developers using the current WP version (currently 5.7). I'm hoping that the devs will pay attention to this very useful plugin and give it a little refresh every now and then so that it doesn't end up abandoned. If they choose to abandon it, we'll have to start treating it as a security risk, and that would be a shame...