[2019] I can not log in to the server 1321

Hello @Invader, have you tried to reset your router?

If resetting the router doesn’t help you, please try the following workaround:

1-) Run command prompt as administrator
( Windows key, type ‘cmd’, right-click Command Prompt app and select Run as administrator )
2-) Run command “ipconfig /flushdns” (without quotes)
3-) Run command “netsh int ip reset” (without quotes)
4-) Restart your PC

Could you please share your current region and ISP?

Please let us know if you’re still having issues logging in to this specific server, thanks!