That's the problem: You mean to plug an ethernet cable into the C6 WAN port, connect to C80 LAN port and configure an Internet access ? If I understood correctly, then using the WDS would be...

@RFP Yeah, that's probably because you are not receiving an IP address on the WAN/Internet port and the C6 doesn't believe it has an internet access. But don't worry, you have already admin access to...

@RFP Check this thread if you have enabled WDS via 5 GHz band. If the issue persists try to configure WDS via 2.4 GHz band and test again.

Resetting the C6 seems to be the only option to gain control of the router in that case. That's from an old FW version of C6, you may not have this option currently available.

@RFP I see, that's unusual. Which band you use for WDS - 2.4 GHz or 5 GHZ ? Do you have for WDS mode these options:

@GA_Polo What's your C6 WAN/Internet IP address ? Is that the private IP address that has been updated into the no-ip database ? If that's the case then you have two options : 1) If it's possible try...