To transfer a license to a new server, you must connect to the AEM  - Licensing an create a de-activation file.

Once the file is created, Appeon Server will continue working for another 30 days and the end user will not receive any message.

Only the AEM administrator will encounter some warning message.

After creating the de-activation file, the AEM administrator need to install Appeon in the new machine and create an activation file from AEM - Licensing

Both files need to be send to your Novalys contact.