@Madtragic The AP setup is straigh forward:

@DavidAbin Just to make sure that we're on the same page can you post a screenshot from the router's menu where you've deleted this device. If you add a device to your Deny list it means this device...

@DavidAbin Here's the Access Control menu: This feature is available only when the device is in wireless router mode although some devices offer Deny list in AP mode. What's important here as I...

@JulianC I believe that depends on the FW release - check this thread. Are these issues with a particular wired device or different wired devices ?

@DavidAbin From which menu of the router did you remove this wireless client ? If its from the Advanced => Network => DHCP Server => Address Reservation you can add it again. If it is from Network...

@rekky In such case this really sounds like a FW issue. I would suggest to contact your local tech support for further troubleshooting.