VPN Getting Blocked Everywhere? My New Split Setup

I have been trying this out and one thing I have been noticing is that when using the Proton VPN Extension, I can’t seem to also use NextDNS. I set it in the DNS setting in both Brave and Firefox, but then extension seems to take over the DNS. Any ways around this? I am Fedora 42. I also have NextDNS set up systemwide using the NextDNS command line program.