The form above isn't working so I will give details here. I have three deco P9 as a mesh network plugged into a modem. I bought this model because of the powerline backhaul but it always uses wireless backhaul. Is there a way to force it to use the power line backhaul as I find the wireless slower and more unstable. 
 

I am using the latest firmware as of 3/14/2025 

Thanks!