@Chubby-Chocobo I see at least one, but possibly two issues with that configuration, which could prevent computers on your network from using that printer. You will need to change IP address on...

@RadekB It is possible there are issues with Ethernet wiring at your house, or gigabit switch is not compatible with Deco mesh. Really worst but very infrequent case is your ISP router not compatible...

@Lewis87 There may be issues with your Ethernet wiring, or your switch is not compatible with Deco mesh protocols. More about it here: General questions about Ethernet Backhaul feature on your Deco....

@YanAndrew It is OK. I have similar setup in my house, works just fine. In my house, three out of four Deco units are hardwired and one is wirelessly connected to Main Deco.

@RadekB Please confirm: 1. You have deleted (reset) all Deco nodes from Deco network, by following this FAQ, section "Reset a Deco unit:" https://www.tp-link.com/us/support/faq/1457/ 2. After that,...

@RadekB The easiest would be to undo what you have done, and start again. Steps: Delete all Deco nodes, one by one, from both Deco networks. When you delete Deco node, it will be reset. Delete both...