If you see this message, it means that you’ve already used a trial version of AirServer on your computer, which has since expired.
If you wish to extend the trial (& you have a valid use case), we will need your device ID to extend the trial. The device ID is automatically generated within AirServer when your trial expires. Once expired, you can then send this ID to us by pressing the "Request Trial Extension" button in AirServer.
If you are using AirServer for Windows 10 Desktop Edition or AirServer for Surface Hub, please press the "firstname.lastname@example.org" link on the same "Trial expired"-screen.