Registering a Camera with Lucam Recorder

Hi there - has anyone on the forum had any correspondence recently from Heiko Wilkens? I've used Lucam Recorder for a while now, but having bought a second-hand Skynyx camera I need to do two things:

I need to 'de-register' an existing camera from the two I currently have listed, and...

I need a new licence code for my new camera. Sounds easy, but...

I can't find any direction for de-registering a camera and

I believe Adirondack Video Astronomy is no more... (web link still on the Lucam Recorder page, but doesn't seem to go anywhere)

and I can't get any response from the email link for requesting a licence (heiko at astrofactum dot de)

Does anyone know anything to help? Thanks Gerry

Got my licence key from Heiko - he's having email issues and apologises for delays.

Gerry