Sorry to hear that. I’ll tag @Revopoint-Cassie to look at this when she gets back from holiday (the 6th, I think).
Alternatively, you could request another CD License Key in this thread: https://forum.revopoint3d.com/t/windows-mac-version-revo-studio-v3-0-5-4/4901
Add a note that the first key did not work; I’ve been told there is no problem getting a second key for the asking.