The license key was sent to you by email when you purchased a HeavyM license. If you can’t find it, please check your spam folder, or use the recovery link on this page. You’ll need to give us the email you used for your order so that it can be sent to you again.
Note: if you don’t have a license key because you bought HeavyM when there was a login system, you also need to follow the recovery process mentioned in the last paragraph to get a key.