New version of Polderbits Sound Recorder and Editor

Hello,
I have just downloaded the trial version of this software. I clicked on buy now and all I get is a blackboard with no info on where to click to buy, how much to pay or how to pay.

I should also mention that I have used this great software for some years and am disappointed that I have to buy it again because the old version does not run under Windows 10. Is there an upgrade or perhaps a special rate for someone who has already paid for the software?

Cheers
Spencer Bailey