Since a few days/weeks I couldn’t get images from catbox.moe when I was using my
WiFi with pihole. The reason was that the default DNS Quad9 (filtered) was
blocking it. It took me a while to figure out how pihole actually sets the DNS.
So in the Web you go to settings and then to DNS and then tick in for example
Google.
Quad9 doesn’t report it as being blocked. https://quad9.net/result?url=catbox.moe