NextDNS not working when using VPN

Hi so I added nextDNS to my windows 11 operating system running the latest update (22631.3593). I did this by entering my nextDNS IP address and HTTP endpoint through hardware properties. Moreover I also added the HTTP endpoint in my brave and Firefox browsers running the latest updates . On my pc I also have Bitdefender ultimate package installed. When I turn on Bitdefender VPN the following error occurs.

Note that I entered my HTTP endpoint in my browser to force the VPN to connect to the DNS as it was a solution that i found online