My pi-hole does not working properly

my pi-hole does not working properly.
On this website:
I can see all the ads when I disable AdBlock on pc or when I visit the site via phone.

Since installing I have enabled DHCP server on pi-hole and turn it off on my router.
Before enabling DHCP I had 0 Queries Blocked for more than 24hours running.

From a client that you believe should be connected to the Pi-Hole for DNS, from the command prompt or terminal on that client (and not via ssh or Putty to the Pi), what is the output of

nslookup pi.hole

Hello, thank you for quick reply

** server can't find pi.hole: NXDOMAIN

The client is not using Pi-hole for DNS. It is using the router.