Windows 10: Re-Activation failing on Windows 11 Pro after upgrading hardware

I upgraded the hardware in my machine over the weekend then tried to re-activate Windows 11 Pro. It is was a digital license from years ago. It failed, the troubleshooting failed and then I selected "I changed the hardware...", selected the machine from the list of options- and that failed as well. I then called support. After going over and re-doing all the activation steps, the tech escalated me to someone higher up. That tech looked over some things and then told me that the servers were down and to wait 24 hours and it would all work. I did so. It failed exactly the same way. The

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Activating Windows 10 Pro After a Hardware Upgrade!

I followed all the steps to linking my Windows 10 Pro to my Microsoft account so that I could upgrade my hardware, reinstall Windows 10 Pro, and activate it, but it's not working. I'm signed into my Microsoft account. I tried the activation troubleshooter,
selecing that I recently changed hardware, etc. Nothing is working. I can see my old computer under my Microsoft account, as well as my new one (with better hardware). I changed the motherboard, ram, and CPU. Any suggestions would be wonderful.

 

Windows 11 Pro Upgrade from Windows 10 Pro Edition

No but after it installed the malfunctioning Windows 11 upgrade it was listed as Windows 11 Pro. Microsoft Windows support advised I reinstall Windows 10 Pro and said that Windows 11 is really only meant for new PC's that come with it preinstalled. MSI website doesn't list my 2020 GT76 Titan dt-039 notebook on their Windows 11 upgrade eligibility list so I guess that's why the Windows 11 Pro upgrade failed. I suggest being careful with trying the Windows 11 upgrade despite it stating my notebook was capable of running Windows 11 it was wrong. Luckily I have the original Windows 10 Pro USB Flash drive because the Windows 11 Pro upgrade was so incomplete I had no way of reverting notebook back to Windows 10 without reinstalling from a USB Flash.

 

Windows 11 Home to Pro upgrade

Want to upgrade 11 Home to 11 Pro. Tried download, but apparently files transferred were for 11 Enterprise. This will not activate; error is "invalid digital license or product key". This is on a new Surface. How to proceed?

Can withdraw/delete this. The suggestion to downgrade - listed below - with a 'fake' windows 10 key works.