Empty Download Folders!
As noted in a previous issue (#1), it doesn't work in all Hotmart courses, that is because it reads the page data looking for Youtube and Vimeo hosted content (as far as I could tell), Hotmart allows content to be hosted within Wistia and from their own servers via HLS using a simple cryptography where all stream fragments need the decryption key that is sent before they are sent out. That key is the same per video quality and applies for all fragments, FFMPEG can read the provided .m3u8 file containing the key and video fragment paths to forge the full video, I am unsure if that is the best way to do so. Either way, since it doesn't find a youtube/vimeo link, it just reads element names and create the respective folders, leaving them empty.
As a side feature request: It also doesn't seem to read materials to download added files, logging video description to a .txt might also be useful for later reference.