@Tony Thanks for the reply. So do you think one deco is a lemon? And in ap mode can the decos have a different ssid from the main router?

Installed 2 deco m5 units. Tried many different setups but my second deco turn red from time to time. 1.) I tried setting it up as Wifi modem - deco m5 Main - deco m5 2nd. tried it through wifi only...

I there a way to set time of use for the guest network? I used to have it on my old router but I cant seem to find the option here.