PACE 5268AC - MAC FILTERING
Trying to set up MAC filtering on my new PACE 5268AC.
Following the obvious approach: Settings->LAN->Wi-Fi->MAC Filtering. Then adding an active MAC # to the Blocked Devices and clicking on "Enable MAC Filtering" yields a dialog (sometimes) for inputting the "Device Access Code" but then red box with "Errors".
The inability to establish MAC filtering is a great inconvenience and potential security risk.
Any help appreciated.