@Blynn73 I think Technical support is right and you need to get a VOIP-compatible model, like Archer VR2800V since VR2800 does not support VOIP.

@wanfbuk Hi, you could get the previous versions here: https://www.tp-link.com/en/support/download/tl-wa855re/#Firmware I see the latest 1.0.10 has added WPA3 which is great. I think you could...

@JK80 Theoretically, it should be. But I would suggest setting up OneMesh first, then hidden SSID on the C80

@Andrsouzaaa Hi, it is listed as planned here: https://www.tp-link.com/en/wpa3/product-list/#range-extenders

@Stephen33 Do you mean the WiFi password? (By the way, the default web management UI password is admin if you actually talked about this one.) If yes, I think you could reset it and set it up again...

@Foresight I think you could temporarily unplug the other extenders, leave 850RE only with 940N and check whether the issue continued.