@HowardMSmal It may be that they were logging in to the wrong SSID - we have two and mac filtering is appllied. It seems possible that even though they are filtered out, they can connect but they...

I have eight AP225s of which seven are working fine but the eighth one is causing me headaches! PCs that are connected to it and be pinged with a turnaround time of a few mS. THe Omada software shows...