@FleetFoot These are the three modes in TD-W89700: I recommended the first because all LAN 1-4 can be used for uplink/downlink. In Wireless Router Mode only LAN 1-3 can be used, because LAN 4 is WAN...

@ColinChambers59 Follow the extender user guide to configure in range extender mode. That's just a regular range extender installation in your case - you need just to point the host SSID to be...

@FleetFoot You have two choices to configure TD-W8970 in your network avoiding double NAT: 1. WDS. 2. AP mode (Case 2). Keep the TD-W8970 in ADSL Modem Router Mode when you configure it. I would...

@Thirith Test it as it is and see if the wireless connections are more stable this way. The benefit of naming the SSIDs differently is that you'll know at any moment where a particular device is...

@iwiwiw USB Printer Sharing is only available for PC and Mac - here's the guide for C2300.

@Arun_Rawat Try resetting the router to its factory defaults to see if that can resolve the issue. Press and hold the reset button for more than 5 seconds (use toothpick or paperclip):