Windows 10: My microsoft account didn't register my Windows 11 License correctly

I bought a new Dell laptop with an original version of Windows 11 Pro on it, but when I opened it and linked it to my Microsoft account, I was surprised that the version installed on it was Windows 11 Home Single Language, and it told me that it needs to connect to the Internet in order to download the updates and upgrade to Windows 11 Pro, Because I am in an area where the internet is currently slow, I installed the Windows 11 Pro version from the official Microsoft website. I had downloaded it before and linked it to my Microsoft account. I was surprised that Windows told me that this versio

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register PC with microsoft; use local account to log in

Just simply log in with your Microsoft Account.
Switch to Microsoft Account in Windows 10

Just go back to using a local account:
Switch to Local Account in Windows 10

Hopefully the tutorials are step by step enough.

 

Link Microsoft Account to Windows 10 Digital License  

This is what i get on step 2

 

Local account to Microsoft account: Swap motherboard & keep win 10?

It looks like you defininately need to link a microsoft account with windows 10 or it says go to the next section (if u didn't) and the next section explains how to purchase a new licence:
"

• Select I changed hardware on this device recently, then select Next.
  
• Enter your connected Microsoft account and password, then select Sign in. The troubleshooter will only work with the connected Microsoft account.
  
• From the list of devices that are linked to your Microsoft account, select the check box next to This is the device I’m using right now.
  
• Select Activate.

If you don’t see the device you’re using in the list of results, make sure that you signed in using the same Microsoft account you associated with the Windows 10 digital license on your device.
If you continue to experience errors while activating, see Get help with Windows activation errors and locate the error you're getting.
If you didn’t link your Microsoft account to the digital license before the hardware change AND you used a product key to upgrade to Windows 10, then continue to next section."