@AshMadden If you have Main Deco connected to ISP router (not just modem, but router/gateway) you could try switching Deco mesh to Access Point mode. See Switching a Deco to Access Point (AP) Mode...

@AshMadden It is possible that your powerline adapters are not compatible with Deco Ethernet backhaul protocol. It is unlikely, because they are of TP-Link brand, but who knows. I suggest you run one...

@AshMadden Is one of them connected directly to Main Deco XE75? Please clarify.

@AshMadden You don't need to force Deco node connect over the Internet: if it can, it will. Which means, something is not right, because Deco does work over power line adapters. You have one...

@ramzinassar The wording is misleading. I brought it to TP-Link Support attention few months ago, but fixing the wording in the app must have been of low priority. If you disable "mesh" for device,...

@ramzinassar Connection preference is just a suggestion. It is like at grocery store, where cashier waves their hand to invite you to their checkout lane, but you ignore that and go to different...