Sorry for the delay. That indicates you’re able to access your AnkiWeb server in your browser. The fact that it works there but not when using Anki could be something on your device or network that’s filtering the connection (firewall, antivirus, etc). If you have another device you can try with (such as a mobile device), it might be worth trying with that to see if the problem persists. If you have access to a different wifi network, that will also help isolate the cause.