Won't Block Ads

We have established that Pi-Hole is properly processing received DNS requests.

Your problem appears to be that some of the DNS traffic from clients is bypassing Pi-Hole, and the ads are coming through those unfiltered domains.

You will need to take a careful look at your router and client configuration to see where the other DNS path is occuring, and correct then. Once you get ALL your DNS traffic going to your Pi-Hole, you should no longer see ads.