@MikeyE Is this Archer C9 brand new? When you done all the troubleshooting you mentioned above, can it get a WAN IP address from the ISP modem? Please show us the Status of the Internet/WAN page of...

@S10077 Are you sure the 2.4G and 5G are still working when the wireless devices are connecting to the router network when there is a WAN error on the router? Please verify if they are connected to...

@Rafat We have reported the issue to the support engineers, they will likely reach out to you via email to continue to troubleshoot your issue.

@petemate93 The Archer AX90 doesn't support Sky MER DHCP option 60/61, we only have the DSL modem routers can work with that, such as Archer VR2100.

@serbian_user Just as terziyski replied, the AX10 doesn't have the ability to be set up as a repeater/extender, it only supposes to work as a wireless router or as an Access Point. If you need to...

@FrankJr.-29_ This is the latest version: Archer C6(US)_V3.20_210513 BTW, if it shows failed to download the firmware from cloud, you may try to change the internet DNS server setting on the C6 to...