@JvA I wish you have given more information, because what you shared is not enough to assess the situation. In a setup with three floors and 6 WiFi mesh nodes it is important how they connect to each...

@AndyHu Glad you figured it yourself. That was on the list of my suspects and one of the reasons I asked to connect printer to Deco directly. Deco mesh does not like devices that have static IP...

@AndyHu If you are sure that printer is getting IP address from Deco, you can try this: Unplug Vornest VAP11G-300 WiFi Bridge/Repeater from printer. Bring Satellite Deco and printer close together....

@NBW877 Now that everything is in order, you can bounce devices in garage (restart or turn their WiFi off/on) and see if some of them will just connect to Garage Deco. For those that won't, wait for...

@NBW877 >Also, it appears the clients in the garage (garage doors, lights) are still connecting to the kitchen Deco rather then the garage Deco. Devices that run on 2.4GHz only, such as older...

@NBW877 Blue ziggy line means Ethernet connection. Have you by any chance connected new Deco M9 with Ethernet cable to your home network? If not, the culprit could be really old firmware version on...