Nighthawk RX80 AirPrint & Airplay Problem

Hello. My RX80 router appears to continually shutdown Apple related traffic. My printer will not show up in AirPrint and my AirPlay devices won’t show up on the iPhone. A reboot of the router fixes the problem temporarily until the router decides to block the traffic again. It’s super annoying and frustrating and has made my printer (Brother) practically useless. I’ve checked every setting in the app to no avail. Yes, all devices are in the same wifi network.

Any solutions to this?!?! Thanks in advance.