Roku not being discovered on network

I have Nighthawk MR60 mesh system with one satellite. All my IP’s match my network. My Roku devices are on my network and appear in attached devices, they work just fine.

The issue is the devices are not found when trying to use the Roku app and when trying to screen cast my iPhone through the Roku. The Roku is an Express 4k.

All devices are on the same 5G band of our router.

I did change the DNS of our router for home internet filtering, but I’m doubtful that’s the issue.

I checked the control my devices options in the Roku settings. I even set it to permissive.