IOS devices fail to print to wireless Brother HL-L2360DW when connected to 5Ghz band.
My IOS devices fail to print to a Brother HL-L2360DW WiFi printer when they are connected to the 5Ghz band of my router; they print fine when connected to the 2.4Ghz band. All IOS devices are on IOS 12.4; modem/router is a new Netgear C7800 on Comcast; the printer has latest firmware. The printer is selectable on the IOS devices, but when I try to print, the IOS device says “contacting printer...” and eventually errors out. I have rebooted all devices, ensured IPv6 is enabled, and I can ping the printer from the IOS devices. Is this an AirPrint software issue, printer issue or router issue? Brother said to contact Apple. Help please!