Unlike some software that requires a simple product key, vMix uses a hardware-based licensing system. When you purchase vMix (whether HD, 4K, or Pro), you are purchasing a license tied to a specific computer.

If you already own a key but are having trouble, you can manage it through the vMix Account Portal :

If you meant a different kind of report (e.g., performance review of vMix 20.0.0.42, or a bug report), please clarify, and I’d be glad to help with that instead.

Knowledge Base * Support. * General. * Can licenses be installed on more than one PC? Lost Registration Key - vMix 27 Jun 2018 —

These are one-time purchases that include one year of free updates [2].