@AlexDeco2023 Are you sure you are not creating new Deco network instead of adding unit to an existent one? Check this document, it might help: Fail to setup the Satellite Deco

@Hope62 Firmware version 1.1.0 for M4 V4 should have that feature. Deco M4(V4) 1.1.0 Version numbering is different for M4 (V4) than for some other Deco models.

@AlexDeco2023 I am assuming you tried to follow this document and without success: How to add an additional unit to your Deco network Quick search for M4 revealed that they are not sold in single...

@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....