Have you tried to manually update it? In case you haven't, you should give it a try:
1.Download the Media Creator Tool here:
2. Open the MediaCreationTool2004 tool and Accept the License terms.
3. Select Upgrade this PC now and make sure to select Keep personal files and apps.
4. It might take some time to install Windows 10.
5. Your computer will restart a few times, Make sure you don’t turn off your PC.
Confirmed Core isolation disabled and hard drivers are fully up-to-date. Some information in the link below:
Windows 10 2004 update block confusion: 'Your PC settings aren't supported'
Hope this helps and please help to accept as Answer if the response is useful.