I got a problem with the block page of pi-hole, it is not working.
When I go to a blocked site I got the browser server not found message but no block page from pi-hole.
The strange thing is when I tunnel my traffic through open-vpn (pivpn) it is working fine, and the block page shows up.
Can you take a screenshot of the browser error page you get when it doesn't work? Your device might not be able to reach the Pi-hole without going through the VPN.
The screenshot looks normal to me. Google adservices cannot be found because it is on the pi-hole blocklist.
What happens is:
-The browser asks for the DNS name of the URL
-Pi-Hole responds with 127.0.0.1 (which is the black hole)
-Browser cannot find website and gives this error message
So every blocked traffic that's going through the router(upper one) shows no block page and every blocked traffic that's going trough the vpn (middle one) does.