Here is a link with all 30 000 keys for this release
@ohsie88, you can find your key there too

https://justpaste.it/9l0em

Actually you don't even need to enter any serial.
All the plugin checks is for this line in %APPDATA%/Karanyi Sounds/Space/Space.settings

Change the val=0 to 1 in <VALUE name="deleteAsio" val="1"/>

And then save the .settings file, and it works. Change the value back to 0 and you need to register again