

If I reverted the settings to default, it stopped working. If the MAC address of your adapter is registered, you can click the Clone MAC Address button, then it will be filled into the WAN MAC Address field. Right away they had me go into the settings under WAN and change some settings under "Special Requirement from ISP." They said to press "MAC Clone" and "Change DHCP frequency to "Normal." Boom! All of the sudden it worked.
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I finally called ASUS Support and explained the problem. I called my ISP and they said everything looked fine on their end. If you tell your router to clone your network cards MAC Address, it makes your ISP. I pulled out my old AC86U and it gave me the same exact problem "Your ISP's DHCP is not working properly." Essentially, MAC cloning helps non-approved devices access the network. I installed stock firmware (was Merlin) no change. I tried different cables and that didn't work. I rebooted the router and the modem and it didn't work. The router main page said "Your ISP's DHCP is not working properly" and there was a red light on the router. When I connected the router directly to my PC the internet worked fine. This afternoon the internet via the router stopped working all of the sudden.
