DNS over HTTPS does not work with router config

Using Frontier FiOS with the Arris NVG468MQ gateway/router.

If I add 1.1.1.1 and 1.0.0.1 in the router config, the 1.1.1.1/help page says I’m not using DoH. The only way I can make it work is by manually adding 1.1.1.1 and 1.0.0.1 to the network adapter properties DNS settings on my laptop.

My question is, should DoH work if I only have the 1.1.1.1 servers configured at the router level?