Coming 2nd time to buy 1 more. If you are planning to upgrade to WIndows 11 take note that only Office 2011 works on that os.

The key workded like a charm, activated via microsoft account

First time using this website and this worked really well.

I just paid Gamers Outlet $20.16 for MS Office Pro Plus 2021, less than a month after it was released. It was no problem activating it, but it took some back and forth to get it to run, as my laptop seemed to prefer to still run 2019. But after a few tries it is now consistently running 2021.

For those that did not know.. Office 2019 does not work on Windows 11 - tried it this morning. This (2021 version) worked as expected and is now running on Windows 10 as I rolled it back from Windows 11 ...So.. Make sure you have a Microsoft account .. Go to https://setup.office.com/ and enter your serial number and it will bind that serial number to your MS account (cool).
In my case I downloaded the x64 bit version so I had to delete/erase my 32 bit version of Office 2019 before it would install (that included MS Visio). Doesn't get any better than this.