GlobalTrash 1.5alpha1

Hello All!
I have been out of the Amiga hardware scene for quite a few years now. I have owned (paid for) Amiga Forever for a couple years now and am currently running the most updated version. I have installed OS3.9BB2 and just recently installed GlobalTrash 1.5 alpha1 written by Oliver Blumert. I have tried multiple times to email and snail mail the author to pay for and get a registration number. Does someone know what to do next? I would sure like to pay for it, but am now leaning towards any means to get rid of the nag popup.
Any advice would be helpful!

Thank you,
Ron Fancella