You must share your channel's license links in your YouTube video description in order to activate your music license and protect your video from copyright claims.
You can find all of your song downloads and license links on the ✅ Licenses & Downloads page page in your Thematic account after downloading the songs.
Easily copy your license links by clicking on the YouTube icon, then paste into your video description 😎 The YouTube license link must include the artist name, song name, and provided link.
Click the View Expired Songs button to see all of the songs you've downloaded that are in the process of being removed from Thematic. Learn more about "Expired" songs here.
P.S. Make sure you are logged in as the project or channel where you're posting your video when getting your license links. Each channel needs to use its own links and links from other projects or channels will not activate your music licenses.