New config not using nextdns

I have made a new config and my router is handing out the appropriate dns addresses but Nextdns.io still says its not using nextdns as the resolver. I have ipv6 disabled and when I go to test.nextdns.io I get :

{
"status": "unconfigured",
"resolver": "107.191.36.143",
"srcIP": "65.153.32.130",
"server": "anexia-ewr-1"
}

But if I refresh test.nextdns.io I then get

{
"status": "unconfigured",
"resolver": "8.9.5.105",
"srcIP": "65.153.32.130",
"server": "vultr-ewr-1"
}

Any pointers would be appreciated.