@BartC SOLVED Seem to have the system working now. Reconfigured the remote Deco which I had the problem with into the main Deco (all 3x Decos are wired to Ethernet and in AP mode). The Samsung A20e...

@BartC Its a Samsung A20e not J5. If main Deco is powered off and only one remote is powered on the phone connecte to the Deco which is powered on just fine. When the main unit is powered on the...

Samsung J5 phone cannot connect to any of my 2 remote Deco M4 units but can connect to main Deco M4 where it works perfectly All other devices like iPhones, Huawei Android phone, laptops & other...