1. Here's what it means
"Your License Key has expired" means that your License Key has expired as it is only valid for a certain period of time.
Example: Lumion Trial is valid for a total of 7 days over a 30 day period.
Example: Lumion Pro Trial is valid for a total of 7 days after being issued.
Example: Lumion Pro Student is valid for a total of 365 days after being issued.
1.1: If you think that your License Key has not expired and that this is an error, please post a new topic at the Lumion Support Center or click on the link below to contact you local Lumion reseller:
Lumion Website: Find a reseller
Knowledge Base: What do you do if your Student License Key is about to expire?