EGS IS is developed and supported directly by the engineering team that builds it. Questions reach the people who write the modules.
Bugs, ideas and screenshots: use the feedback page. It creates a ticket number you can quote.
In the application: License → Start Free 7-Day Demo. It unlocks the module for seven days on this PC, offline, once per machine.
The same request the application sends from License → Request a License. It needs your Device ID, which is shown in that window. We reply by email with a licence file for your PC.