Open the course lesson and use (F12) > Network tab.
This article dives deep into why default download options fail, the risks of legacy tools, and the specific features that define a "better" solution for saving your educational investment.
Most tools advertised as “Thinkific video downloaders” have critical flaws:
Type .mp4 or m3u8 in the filter/search box, or simply click the sub-tab. Play and Capture
