Just an update, I saw about the new "Isolated from main network" option in another thread. My IP cameras are on the Guest network, so I switch off the option for guest network to be "Isolated from...

@TP-Link_Deco Hi, Is there a way to downgrade to a previous version of the firmware? I updated the firmware yesterday and now I am having some problems. I have 2 x E4 Decos, working in Access Point...