Nextdns ipv4 dns, register and blocklist doesn't work.
I'm using nextdns ipv4 on my router, and I dont get a web register and block list neither, out of the suddenly stoped working, I've tried using the dns manually on my devices and it happens the same thing and sometimes it shows just some a few web registers and of hours ago, but not all like it used to do, is there a bug on nextdns server?
It's most likely that your have a dynamic IP, if your IP changes it needs to be linked on the main account page for NextDNS to use your config.
You can get past this by using DoH/DoT or DoQ basically the built in Private DNS or Apple config options for your other devices using the clients should also make everything work perfectly.
Your IP can also change a lot on a carrier as you're using different stations when you move. So using the built in options or apps is going to be far better overall.