Apple Privacy Warning Message

[WilliamUK17]

Hello,
I have recently been trying to get DNS-over-HTTPS working. I have set it up and have generated a Cert for the domain using a DNS challange and I have gone into NGINX proxy manager and pointed the domain to my instance but only locally not to the outside world. Done all the setting and installed the profile on my Mac and it works when I go to query log it shows DNS-over-HTTPS but when I go on my iphone and look at the Wifi network it says the following:

"Privacy Warning:
This network is blocking encrypted DNS traffic.
The names of websites and other servers your device accesses on this network may be monitored and recorded by other devices on this network"

How do I get rid of this warning so other people on my Wifi dont see it. As it is misleading and only certain devices need DNS-over-HTTPS.