Troubleshooting guide
How to fix the problem
In Windows, open the Command Prompt and run ipconfig /flushdns; if not allowed, run it with administrator rights. When finished, reopen your browser and check the website. This is a Windows command, not a universal macOS command. Clearing the DNS cache does not fix invalid domain, server DNS records, or a broken Internet connection.
If the problem persists
If the command returns an error, run Command Prompt as administrator. If the problem persists, check the domain on another machine - clearing the cache does not fix incorrect server DNS records.
Request a repair