During the eLicenser Control Center installation the message "eLicenser Control is not optimized for your Mac" appears.
Starting with macOS 10.13.4, Apple starts to fade out the support for 32-bit applications. All applications should be updated for 64-bit compatibility. Clicking on "Learn more..." provides more information on the topic.
Please update the eLicenser Control Center to version 188.8.131.5228 or newer. A download link can be found on this page.