@TXPhiDelt,

If your switches do not have a designated WAN port, you might just try changing the ports on the switch, last this may force the deco to change its ethernet settings.

Since all of your switch ports are showing connectivity, it sounds like it may be a problem with a network settings such as negotiation, or IP Addressing.

Do the wired devices connected to the satellite switch maintain their internet connection to the internet?

You could try placing the satellite deco in between the switches, so the deco would only have to 'hop' through one switch. The wired devices would then communicate directly with the satellite deco, rather than the primary. Testing is the only way to find what situation works best for your hardware and setup.

If you take the satellite deco and connect it to either the first switch or directly to the main deco, does the deco connect via the ethernet cable or still wirelessly? If you also have two of the same deco, you could try and switch the deco units, as this would force the units to reconfigure.

Otherwise, I would recommend resetting the satellite deco and trying to connect it to your network again as a new device. This would force the node to forget any of the network settings that may be saved for the wired connection.