How do I pay for Polderbits Sound Recorder and Editor

I downloaded Polderbits Sound Recorder and Editor from ZDNet.
http://downloads.zdnet.com/product/2169-11**1005/
I have a seven day trial period. before it is deactivated.
When I try to activate, the link to the server at www.polderbits.com
fails. I get the same error with Microsoft Edge.
I am into day two of my seven day trial period. I have used Polderbits for seven years on another computer and I do want it on my new Win 10 computer. If I don’t get the access key I will loose Polderbits. M y appeals to ZDnet have so far been ignored.
I would appreciate any suggestions.
Frank Camp