I have the same error. Been happening since a year ago when I switched to the x1 modem. Says there is a Mac filtering error. When I go into the modem and add the MAC address of the printer it still doesn’t work. I have tried disabling the 5 band and connecting with the 2.5 and that doesn’t work either. Someone needs to fix this. It’s not an HP problem as I can connect to any other service but my home WiFi with Comcast. I can connect to my iPhones hotspot and my neighbors WiFi through AT&T but not my own.