@TP-Link, I've solved it by placing the Deco's in Access point mode. They were in Router mode (the default), which generated this extra network I didn't need. All works perfectly now! Thanks for the...

@TP-Link_Deco , Thanks for your quick reply! I've reconnected the printer and Chromecast to the Deco network again and, whaddayaknow, it just works.. No clue why it works now and it didn't last time,...

Hello all! I installed three Deco M5 units throughout my house and started migrating my devices to the new network. All seemed so work well (internet connectivity is fine), but I have some problems...