After loading the license the Automation Engine still asks to activate the product when logging into client 0.
In Automation Engine v12.2.2 (28 February 2019) and v12.3.x two changes have been implemented in the Automation Engine that are representative of Broadcom strategy:
Release: AUTWAB99000-12.2-Automic Workload Automation-Base Edition
There is no more technical requirement to install a license:
As a consequence of the above, Non-Stop AE clusters can now be used as a full cluster setup.