You can move the installation from one machine to another one without any extra licensing costs. Even the process of transferring the configuration is described we are happy to offer you professional services as such.
However keep in mind that maintenance must be in place. If maintenance already expired you can use our contact form and ask for a maintenance quote. Please provide the hostname where the current ELP installation is running on.
As described in the form you can run the current and the installation on the new platform parallel for max. 4 weeks. This should give you enough time to test and validate if everything works fine on the system.
Keep in mind that it's recommended to use the most recent ELP Software binaries on the target.