Microsoft dropped free support for Windows 7 Pro and Ultimate on January 14th, 2020. They are now offering fee based support for the next several years (3 from Jan 14, 2020). As a Microsoft Cloud Solutions Provider, we can get those licenses for you, so you can continue to receive security updates. Send us an email at email@example.com and we can get the process started.
The price for these updates is expected to double each year, but we do not have the pricing for years 2 and 3 at this time.
Your Windows 7 installation must be up to date to apply this key. Here is a link to some needed information.