@ericellenbrook This may happen if you configured Pihole with static IP address. If this is the case, configure it to get IP address from DHCP server (dynamic IP address) and see if Pihole appears in...

@kyoku Start with this: General questions about Ethernet Backhaul feature on your Deco

@Flavio_Lemos This is what I see from your pictures: Satellite Office connects by Ethernet to Satellite Hallway. Satellite Hallway connects by WiFi to Main Deco. ---- That usually means Ethernet link...

Yes, Main Deco will transmit WiFi and mobile devices can connect to it. You can see in Deco app which devices connect to what Deco.

@ArchDevil This will work just fine. Also note that Third Deco will connect wirelessly to either Main Deco or Second Deco.

@Ingo_W Yes, you can wire multiple Decos, but it must be done the proper way. This topic is discussed here: General questions about Ethernet Backhaul feature on your Deco