I'm using the TL-WPA7510 kit which consists of a PA7010 adapter and a WPA7510 extender. I've added another extender to my setup, which is a slow old PA4010. My ethernet connection to the PA7010 is a bit unreliable. If it stops working I use the TPPlc utility to try to figure out what's going wrong. I find the utility unintuitive and flaky.

When all 3 devices in my setup are working correctly, the utility displays it differently to what the manual says, which is that the adapter will be shown 
at the bottom and remote powerline devices above it. In my case, this is what it shows. I've renamed each device to make it easier to identify them. My adapter is called 'base-unit-3D7D'. The utility shows the WPA7510 extender at the bottom, with the PA7010 adaptor and the PA4010 extender at the top. Does this mean that my network has been set up wrongly??