Hopefully this can help further on the DNS switching procedure for those using Windows 10. If you changed your DNS using Control Panel and the issue still persists for you, try changing it from the Windows 10 Settings instead. Both can be found by the guide given by Ethan here.
Last but not least try flushing your DNS cache using the command ipconfig /flushdns on the command prompt.
Hopefully this can help further on the DNS switching procedure for those using Windows 10. If you changed your DNS using Control Panel and the issue still persists for you, try changing it from the Windows 10 Settings instead. Both can be found by the guide given by Ethan here.
Last but not least try flushing your DNS cache using the command ipconfig /flushdns on the command prompt.