Travel router and Pihole

I have a GL.iNet GL-AR750S-Ext Gigabit Travel router which I paired with a Pi Zero W. The travel router is set up to route everything through a VPN, I've noticed changing the DNS server on the router to use the pihole is not being allowed. My fix for this is to leave the pi as a wifi client and just point each device to the pi's IP for DNS adblocking.

I am visiting sites that are on the blocklist and I am noticing they are not being blocked. Any thought why this be occurring? I also see that most queries are being answered by cloudflare.

What is the output of these two commands from the Pi terminal:

echo ">top-clients withzero (6)" | nc 127.0.0.14711

echo ">top-domains" | nc 127.0.0.1 4711

https://www.reddit.com/r/pihole/comments/c7mfus/travel_router_and_pihole/


I have an AR150 and able to change dns settings
https://docs.gl-inet.com/en/2/setup/dns/

You might have to use Luci to do it f you really can't find the option in the standard gui, but it's definitely possible

It even mentions it in this article
https://medium.com/@mccob/mini-review-of-gl-inet-slate-gl-ar750s-ext-8284e2bfac62