@Iggy888 One more screenshot, please, info page for Office Deco. Example:

@Iggy888 The good news is your Main Deco delivers expected speeds. To find what is going with your Office Deco, please share "Show List" and "Show Map" screenshots from your Deco app. Examples: and...

@SC55 To answer this question, I'll need you to tell me the following: 1. What is the speed of your Internet connection? 2. Do you plan to connect M4 to Main E4 by Ethernet cable or wirelessly? 3. Do...

@Amberglow 1. Do you run your own DNS server? 2. If you do not run standalone DNS server, have you made any changes in ER605 router firewall or its other settings that could prevent (filter, etc.)...

@Registered55 You can find this information in Deco app. Example from my Deco app: In this example, Satellite Office and Satellite Study use Ethernet (wired) backhaul, Satellite Bedroom uses WiFi...

@Gandre Start with this document: General questions about Ethernet Backhaul feature on your Deco If you have questions after reading it, feel free to ask here.