@bogate Does that IP address fall into one of the following IP address ranges? 10.0.0.0 - 10.255.255.255 172.16.0.0 - 172.31.255.255 192.168.0.0 - 192.168.255.255 100.64.0.0 - 100.127.255.255 If that...

@bogate Can you successfully establish a PPTP VPN connection to your Archer C6 via the Internet (i.e. from an external network)?

@237023Jony I presume it's the same as with most TP-Link devices. If you forgot the admin password, then the only way to get back into the configuration page is to reset the device to factory default...

@tommynjsi Hi, What about the configuration of the ISP-supplied modem router? Have you configured it to work in so-called "Bridge" mode?

@Tapabrata Firmware for the Archer A6 V3(US) can be downloaded from this webpage: (verify that "V3" is selected from the drop-down menu for the hardware version)...

@GRAPOLS Hi, I see you haven't got an answer yet. I don't have that information either, but as an indication I can tell you that on my Archer AX50 the max clients option for the OpenVPN is set to 10....