Linking FAQs on
licensing and
Peter Chamberlain's answer in a different thread.
In short, you still have your license and the ability to reuse it. With activation key based licenses:
• you have the option to work on two systems simultaneously. The license is not tied to specific systems.
• You can recover an activation instance for reuse. From the Help menu, select deactivate license. DaVinci Resolve Studio will close. On the new system, install DaVinci Resolve Studio and enter activation key when prompted. If you did not deactivate, DaVinci Resolve Studio considers this as a secondary system, and takes up the remaining instance.
• When there are no activations left, you can reset
all prior activations as a fallback. This is useful for corrupt disk / unstable machine scenarios when you can't deactivate. You will then need to re-enter your activation key on both systems. Note that this is meant as a failsafe - if you attempt to reset too many times per week, you may need to contact Blackmagic Support to verify your activation details.