@LDVSoft This behavior could be due to the fact that when building an Easymesh over ethernet backhaul it should fall back to a wireless backhaul if the ethernet backhaul fails. Since the devices are...

@Vish_9685 This sounds really odd cause according to its specs AX90 should support 160Mhz channel width on one of its 5GHz bands: Can you post a screenshot fron the router's WebGUI ?

@Zatara RE200 DHCP server settings should be under Settings > Network > DHCP Server: Do you have this setting in your RE200 WebGUI ? This DHCP server should be turned off when RE200 is in AP mode.

@ArtGhost Are you refering to this view:

@LucTpL AX50 model is known for its overheating problems - details. It should be placed anywhere but on a fireplace. As @Sunshine posted put it vertically if possible, in a well ventilated open area....

@FSC28 I believe that both would do the job but in the end that depends on your budget - er8411 is more powerful device with 10G ports.