@ujjal1960 To reset your router to its factory defaults press the reest button for about 10 seconds, then re-configure from scratch. The default one is admin (all lowercase) for both username and...

@SabbyZ If you've reset your C20 to its factory settings here's how to configure from scratch.

@Joest When in AP mode the device doesn't show its advanced menu but some of its features configured in router mode still work in AP mode - details.

Here's a feature request for that matter. Anyone interested can upvote this request for implementation.

@Vadersan74 As @Marvin_S pointed Archer AX80 is not a direct replacement for VR1600v, unless you're using VR1600v in wireless router mode (using its WAN port instead of DSL port).If that's the case...

@JennyB You can name the RE extended wireless SSID different from your main router or the same - it's your choice (details). And yes, your WiFi is automatically transferring from the modem to the...