Hello,
Have you used the generic product key VK7JG-NPHTM-C97JM-9MPGT-3V66T to get your Windows edition back to Pro yet?
If not, you may do so via Settings > System > Activation, pressing "Change" next to "Change Product Key". Then, once you restart your PC, head to the same menu, but this time run the Activation Troubleshooter and see if there is a license in your account to successfully activate Windows 11 Pro.
Let me know how this goes.