Hi Trinha
Steps to restore activation
Go to Settings → System → Activation
Select Change product key
- Enter the generic Pro key
→ Windows upgrades to Pro After reboot, go to Activation Windows should show:VK7JG-NPHTM-C97JM-9MPGT-3V66T
“Windows is activated with a digital licence”
EDIT, I've should of added the following;
Generic keys cannot activate Windows.
Online activation checks/ reject generic keys.
Edition upgrades can be performed without contacting activation servers.
Microsoft‑aligned support guidance instructs disconnecting from the internet before entering the generic Pro key.