I have 2 Deco P9's spread throughout my 3500 SFT house and 1 Deco p9 in my office that is detached from the house.

I have ethernet cable dropped in all 3 spots.

My main Deco in the middle of the house is connected via ethernet to our Spectrum router.

My office access point is connected via ethernet and does confirm that in the app.  My office is not close enough to pick up the powerline or mesh from the other access point.

My other access point is placed in a dead spot in the house to push the signal.  It is connected via ethernet however the app does not confirm that nor do the speeds confirm that.  

It seems as tho it's close enough for powerline/mesh so it won't accept the ethernet backhaul.

I'm setup in access point mode.  In router mode, ethernet wouldn't work on any of the routers.

TLDR;  One of my access points (P9) is not confirming ethernet connection nor showing the speeds it should.  Can I force ethernet backhaul on that unit?  Anything else I can?  I'm sending these back if I can't take advantage of ethernet backhaul on all the units.

Thank you!