Need legacy code activation help for chanalyzer 5

I have an old wi*spy 2.4ghz usb dongle I finally found it today, I purchased it mid 2014, my activation date is 2014-07-01.

I followed the links (legacy license keys) and downloaded the last version for my activation code
Chanalyzer, but after installation when I try to enter my activation code, I’m getting this error

“License service currently unavailable. Please check your internet connection and try again”

Obviously my internet works, I’m posting this, and downloaded the file. Am I out of luck? My purchase is no longer supported even with the legacy version of the software?

When I click buy, it is able to open up a window tab to “” in chrome.

Thanks for any help