I think this is a sad behaviour.
If you no longer intend to support your software and make money from it, you might as well release it for free.
If you don't want to open source it that's fine put at least put a keyfile up on your website if you don't accept any more registrations!
SASG doesn't even have a text on their home page announcing that registrations won't be accepted!
I have also tried to contact both Holger Kruse and Stefan Stuntz/SASG several times, asking about registrations etc. I haven't recieved any answers.
