I live in Mexico and I have 7 Deco M5 and 1 M3W all in AP mode. They were all working well until my ISP changed their service to fiber optic and since then the internet crashed. When it was rebooted it was very slow and the Deco units kept failing. They only work now with wifi and no ethernet backhaul. Do you have a solution for me to return to ethernet backhaul please?

I forgot to mention that I also have IPTV, 3 TV boxes that are basically modified Android TV Boxes.