Something like this happened to me. Change the static IP (configure your NAS to get its IP from DHCP) and fix the IP on the UniFi UI.

That’s my take too. I use DoH and to work around this I created a hosts file with some archive sites.

High chances you’re using cloudflare dns. Google for cloudflare archive.is to find out more.

MadAI’s disease.

I guess we didn’t learn when we did it with cows.