It is a string identifying your CPU, located in Ellipter UI at Menu>Help>About.
A trial key is mostly a developer key but with one essential limitation: it works only on one computer. The developer key doesn't have such limitations.
You can buy one or more on our order page.
The personal information we collect from you will be used by SeriousBit and its controlled subsidiaries and affiliates to provide the service(s) or carry out the transaction(s) you have requested or authorized, and may also be used to request additional information on feedback that you provide about the product or service that you are using; to provide critical updates and notifications regarding the software; to improve the product or service, for example bug and survey form inquiries, or to provide you with advance notice of events or to tell you about new product releases.