WIreless Devices cannot use the Pi-Hole

[deHakkelaar]

@Averex

I do not wish to set the Pi-Hole as a the dns server of the router

You dont have to configure upstream (WAN) DNS for the router to the Pi-hole address.
Preferred is to have the DHCP service on the router to push the Pi-hole IP address as the only DNS server to the clients:

How do I configure my devices to use Pi-hole as their DNS server?

Three methods Generally, there are three different methods that will enable devices on your network to be protected by Pi-hole. 1. Define Pi-hole's IP address as the only DNS entry in the router Rationale Only is italicized here for a reason: Pi-hole needs to be the only DNS server because it intercepts queries and decides whether or not they should be blocked. If you have other DNS servers configured, you may be sent to the correct domain, bypassing Pi-hole completely. Because of this, we re…

@Averex

I used to be able to have my iphone and other wireless devices point to the Pi-Hole for dns and for some reason they all keep getting forwarded to my router instead, completely bypassing the Pi-Hole.

How have you determined this ?

Pads and phones are a bit hard to diagnose because lacking tools.
Are you able to connect a PC/laptop to WiFi and recreate the symptoms ?
With Linux/Windows/MacOS, you can test DNS resolution with the nslookup tool:

nslookup pi.hole <PIHOLE_IP_ADDRESS>

Linux & MacOS clients will display DNS nameserver(s) configured with below one:

cat /etc/resolv.conf

For Windows clients, use below one to see configured DNS server(s) and more:

ipconfig /all