It gets worse… 
If you need a separate HALion Sonic 2 license to use HALion Sonic 2 on a separate system, please get in touch with the support via MySteinberg
Since one is not allowed to use both HS2 & HS3 on the same USB dongle.
Crazily one is unable to contact support directly like … Presonus for example! … one must contact the dealer The additional license is a software code - just provide it via our MySteinberg accounts 
All this because Steinberg make a half-baked effort at moving away from the dongle whilst still thinking like dongles… 