A detailed explanation of unpacking version 3 is available but version 5 is online license control based.
Yes its really strange they decided to close though they are better then most of there competitors.
tbh 90% marketing software protected with it not get cracked since very elite crackers tried there best. they provide good security. I tried to unpack myself a delphi tool protected with it though after dump it was crashing. after alot of try i ultimately decided to give up.