@Solla-topee Thank you for your response. I'll follow your suggestion, i.e. set up a different network on the RE505X and change it to the router's SSID in a few days to see how things go. I'll report...

@Solla-topee Thank you for your response, much appreciated. When I add "EXT" to the range extender's 5GHz network, I can connect easily, no problem. But this is not what I want - I need the RE505X to...

First of all, the thread concerns the RE505X Range Extender, not an "Adapter", but I could not find the RE505X in the drop-down menu. So, I can successfully connect the RE505X to the Archer AX11000...

@Mikey_C Well then, there's not much I can say. Apart from testing another brand, all I could recommend is setting up a daily reboot, but I'm sure you've thought of that already ... I myself no...

@Kevin_Z Thank you for the info, much appreciated. Although I do not use the C5400X now (I have it set up at my in-laws', while I use the AX11000), I must say it is an excellent router. A pity then...

A quick question: when (if at all) is it planned to add WPA3 and OneMesh support for the Archer C5400X? Lovely router, but it could do with such an update, especially as some lower-end models (for...