Welcome to Android Central! Which generation of the Hub do you have? Is it the 1st gen (called the Google Home Hub), or the 2nd or 3rd gen (called the Nest Hub)?
Is it responding to you this way when you give a "Hey Google" command? Have you tried rebooting the Hub, as well as rebooting your wi-fi router?
Are you using a VPN or any kind of firewall on your wi-fi network?