1
On the new PC, open the Settings App.
Go to System - Activation.
Click the Troubleshoot button.
Select 'I changed my hardware' do you see the previously activated device in the list to move the licence to the new PC?
2
If that process is not successful.
Download the free ShowKeyPlus app from the Microsoft Store.
On the left of that app, click 'Check Edition', then enter your product key into that app.
Please provide a screenshot of that app window and please hide your product key in the screenshot.