I'm using an ASUS Rt-68U ac1900 dual band router to cover smart home. All worked well until recently the Washer/Dryer got kicked off and now fail to re-connect to the router (via WPS). I have 3 Echo devices, 3 smart switches and 3 LEDs running. DISH network is connected on 5GHz everything else on 2.4GHz. Two PCs are ethernet and one HP printer is wireless (2.4). Is there a limit to how many devices in a home that can connect to the router? Signal strength is strong (-50db), coverage good and router is set to channel 6. No neighbors less than 1/4 mile away. DHCP is on and Active QoS, too. selected for home devices at highest priority. Any suggestions on how to get smart appliance (washer/dryer) to connect to the LAN? I want to add Nest thermostat also.