Hello.. I have a A80-pro device.
I have an IcyBox usb-c to ethernet adapter
( https://www.amazon.com/IcyBox-IB-AC501-Gigabit-Ethernet-Adapter/dp/B00I3FCXH2 )
It is supposed to work out of the box. Maybe the drivers are removed from your factory ROM ?
Is there a way to install them? I am trying to access the network without wi-fi.