Thimmy wrote I have also connected the 2nd Deco directly to the NAS just now without the switch and again, it sees the NAS but I cannot connect or load the page. Yes the NAS IP address is static. I...

Elemer wrote @Alexandre. Thanks for the reply. I think it's more likely a configuration issue as the same cables and switch used prior to installing the Decos were running at full speed no problems....

@Thimmy Usual suspects are not there, IPs seem to be OK. Can you bring Satellite Deco to NAS (or NAS to Satellite Deco) and connect them to each other by Ethernet cable? That would bypass the switch,...

@Thimmy You said you can see NAS in Deco app. Open info page for Satellite Deco to which NAS is connected, on the top of the page is IP address of Satellite Deco. What is this address? In that...

@Thimmy When you are saying "I have set the main Deco as a wireless access point," do you mean you did this: Switching a Deco to Access Point (AP) Mode?

@Elemer It is usually either Deco mesh configuration settings, or wired network issue. The description you gave does not completely fit either of those two. If it were wired network issue, such as...