@Boriy Hi, May I know where did you see that there is no QoS setting for the Ethernet-connected clients? There are device priority and application priority for the Deco QoS settings, so you can set a...

@jcdp Hello, Sorry that the current firmware is not allowed to downgrade to the previous version, but we can try to figure it out. Please connect one computer to your modem/router directly, confirm...

@Drakcon Hi, Sorry that the Deco can't build a mesh network with those non-Deco devices. The Deco Mesh is the technology only used on TP-Link Deco products for the Mesh network. Good days.

@dreese19 Hi, For the disconnect issues, we suggest you update the firmware of your Deco M9 system first: 1. We released a new firmware for the Deco M9 Plus V2 months ago, and below is the download...

@phy_lis Hello, According to your troubleshooting, the modem should be working fine and we may try to reconfigure the Deco from scratch: 1. Connect your computer directly to the modem bypass the old...

@stevesul Swap the Deco location or a reboot may refresh the connection and the Deco may suggest to the device to connect to the nearest Deco node successfully.