Ensure you haven't left Lumion running on a different workstation.

Activating Lumion 12.5 is a straightforward process that requires a few simple steps:

For businesses, using unlicensed software can result in heavy fines and damage to professional reputation. Lumion 12.5 Trial and Student Versions

: If the key isn't automatically recognized, go to your Lumion Account and click "Register a License Key" , then paste the code from your email.

If you tell me you are trying to use (Pro, Standard, or Student), I can help you find the specific support page to recover your access.