@Ccooaattssy You can easily test this by disconnecting all devices but the BT Smart hub 2 and connect to its wireless network. If your BT Smart hub 2 doesn't provide a stable connection itself then...

@Ccooaattssy TL-WA850RE DHCP server should be disabled so the only DHCP server on your network would be the BT Smart Hub 2. Use the PLC WebGUI (via computer browser) for upgrading its FW or the tpPLC...

@mhohuh TL-WR940N doesn't support a captive portal. Here's a guide on how to configure portal authentication of some router models (not every model has this feature) - click on the raw down after "...

@Ccooaattssy OK, So what kind of issues exactly you're experiencing - you mentioned something about Xbox NAT type errors - give us some more details on that. Why do you think there is a IP...

@Feelgudd Yes, you could VR900 has three working modes - VDSL/ADSL Modem Router, Wireless Router, 3G/4G Router. In wireless router mode LAN4 is the WAN port, the rest are LAN ports.

@AlifAlHasan If it's possible test with another ethernet cable. If the issue persists it could be a defective unit - you may contact your local tech support for further troubleshooting.