Does anyone know what happened to TRWin Homepage? Have the authors given up on TRWin.

I need to find a copy of TRWin v1.23 Registered since I can't buy it online now. I have a v1.22 Registered which I downloaded but I used to have a v1.23.

Does anyone know the current status of TRWin? Eg. Has it gone public domain, abandonware etc.