I recently started digging through my list of WiFi devices, which are mostly smart home devices, shown in the Deco app. I noticed one device I couldn't identify (it's probably a smart switch or bulb that I can't pin down) so I blacklisted it so I could see which device no longer functioned. A few hours later the device was connected and was no longer shown as blacklisted. So, I removed the device and it still connected.

To see if it was specific to that device, I went through and removed and all devices which weren't currently connected (family and friends' phones, tablets, etc.). When I removed them I expected this to mean that they could no longer connect to the network without authorization. Apparently that isn't the case because a neighbor was able to connect his iPad as soon as it was in range. I blacklisted that device after it was disconnected and confirmed that it showed it as blacklisted. A few hours later it is not longer blacklisted.

Has anyone else seen this happen? Can anyone shed some light on why this is happening?

Thanks,

John