Worked - One minor issue, but was my fault.
I had done a fresh install of 'Windows 10 Pro N'' and afterwards tried to use the key; this failed.
I re installed windows and provided the key during installation and it worked.

Fast payment processing and windows activation. The key works, thank you.

It simply works.
you grt the coad in the websight itself. no need to wait for the mail. but this means you can be confused as well

I bought a Windows 10 Pro activation key and the key worked at the first try. Great deal.

Bought and was instantly available, checked the PID and the key was valid 10/10