Can’t get NextDNS to work on iPhone

I’ve followed all the instructions but still it says I’m using Cloudflare. Can someone help?

iphone 11 pro max

iOS 14.4

Test results:

{
"status": "unconfigured",
"client": "75.118.16.241",
"resolver": "108.162.217.49",
"server": "vultr-chi-1"
}