(the paid one) requires a genuine 25-digit license key or a physical USB dongle.
AI features like Face Recognition, Speed Warp, and Smart Reframe. The Truth About "Free Activation Keys" Davinci Resolve Studio 16 Activation Key Free
Your Studio 16 license key works for versions 16 only. Upgrading to version 17 or 18 requires purchasing a new license (or upgrading if you bought after a certain date – check Blackmagic's policy). (the paid one) requires a genuine 25-digit license