From the error displayed, it seems that the server is not working or is not accepting the connection.
Maybe the error is happening to me because it's an international IP. Therefore the connection is refused.
But in your case, the error could be due to a VPN, proxy setting or an ISP (Internet Service Provider) related issue.
Do you have any VPN installed?
If so, I suggest you uninstall and see if you can access the site.
Check proxy settings:
- Press "Windows + R", type "inetcpl.cpl", and click Ok.
- Select the "Connections" tab and click on "LAN Settings";
- Uncheck "Automatically detect settings";
- Also, uncheck the option "Use a proxy server for your LAN..." if checked;
- Click OK in both windows.
- Close and open your browser and see if you can access the site.
As for issues related to your ISP, you need to check with them.