Free license not working

I just created an account and i have never used this app. i tried to use the free trial, but somehow it says that it expired. after that I created another account and had the same problem. what should i do?

Just to add to this: this is where the current system is limited in separating people from computers. This is a student of mine that wants to try out Rhino on a computer that he has shared with his brother

2nd hand computers will need to be wiped, and reinitialized.
Or, buy a license, do an evaluation, and if Rhino isn’t the tool for them, return it for refund.