@YouSeeStefan Yes, it is the latest official firmware version for Deco M9 plus: https://www.tp-link.com/support/download/deco-m9-plus/v2/#Firmware Thank you very much!

@Quispel Hi, sorry for the delay. It might be related to the IPTV service. Did your TV get connected by Ethernet cable to the Deco? If yes, please go to more>advanced>IPTV/VLAN and choose the second...

@tok Hi, it would not block the powerline backhaul between Deco P9 units. But since I did not notice any router between modem and powerline adapters, so did you just use the powerline adapter to...

@AllexRo Hi, thank you very much for your kind reply. It is very likely that the DNS server - pi-hole server has been considered as one of the hosts of the main network which has been separated from...

@Emjayar25 Hi, thank you very much for your kind reply. Every wireless signal would produce a certain degree of interference, especially when they are on the same channel, but this kind of...

@RidgeDweller Hi, thank you very much for your kind feedback. We might need to forward your case to the senior engineers for further assistance. Please have a check of your email box later. Thanks a...