@David-TP Thank you for your answer. I updated Deco's firmware, which was successful, but it didn't help. Then I tried to change another Deco to the main one, according to the instructions in link 1,...

Greetings everyone! I have a problem. I have a system of three Deco M5 and recently started having problems, in particular, from time to time the main network disappears and only the guest network...