@GS-Link Is the TP-Link model number Archer AX90? Please verify this by referring to the device bottom label. If you want to add the TP-Link router to the BT Fibre via ONT network, firstly, ensure...

@Greanhouse Can we have the screenshot about the IPv6 settings on the C5400X? What is the IPv6 connection type provided by BT? Please confirm this again with BT, then you can refer to this guide for...

@cayc I saw you followed the below thread also, can we confirm are you talking about the same issue? If yes, can you please confirm the questions we asked?...

@WebTech After the firmware update, have you tried to reset the router to factory defaults, either by pressing the RESET button on the router or do the factory defaults via the web GUI? If not yet,...

@SnehBansal To locate this issue and try to fix it, we would like to follow up on your case via email. Please check your inbox and provide the information that we need.

@WisamTND Thank you very much for all the detailed info and screenshots about the settings about the settings, we appreciate it. To locate this issue and try to fix it, we would like to follow up on...