Attempt to install/validate Rhino 5 on a second computer

I’ve installed rhino on a second computer, and when it comes time to validate the key, I get an error saying Its under a different email. Ive tried typing all email accounts ive ever had and nothing works. What can I do or who can I contact to figure it out?

Hi caridadcn7,

Email with all your information and they can help sort out which email address is on file for the license.